Ornithodelphia (or" nithodelfia)

pl. [NL., ornithodelphian (ôrni-tho-del'fi-an), a. and n. [ [ Orni II. n. A member of the Ornithodelphia ; a monotreme or pro to there. ornithodelphic (ôrni-tho-del'fik), a . thodelphia + -ic.] San Same as ornithodelphous . ornithodelphous (or"ni-tho-del'fus), a. [ nithodelphia + -ous .] Of or pertaining to the Ornithodelphia , or having their characters. Ornithogæa (orni-tho-jeä), n. [NL., ὄρνις (όρνιθ-), α bird, γαῖα , earth.] In zoö geog ., New Zealand, as a zoölogical IMG:content-1861.png:[blocks in formation] Ornithogalum (ôr-ni-thog'a-lum), n. [NL. (Tournefort, 1700), cf. L. ornithogale , ὀρνί- θων γάλα, a plant, the star-of-Bethlehem, a fanciful name, lit. 'birds' milk': όρνις (όρνιθ-), a bird; γά- λα, milk: see gal- axy .] A genus of or- namental plants of the order Liliacea and the tribe Scil- leæ, known by the spreading distinct perianth - segments and flattened fila- ments. There are about 80 species, natives of Eu- rope, Africa, and the Ori- ent, mainly in temperate climates. They bear long narrow radical leaves from a coated bulb, and an unbranched leafle flower-stalk, with a ra- IMG:content-1862.png:[ocr errors] IMG:content-1863.png:[ocr errors] umbellatum. a, a stamen; b, the pistil; c , the ovary, transverse section. each segment often marked with a broad green stripe. See star - of - Bethlehem , French or Pru ian asparagus (un- der asparagus ), and eleven - o'clock - lady . IMG:content-1864.png:[blocks in formation] IMG:content-1865.png:[blocks in formation] ornithophilous (ôr-ni-thof'i-lus), a. [ όρνις ( όρνιθ- ), a bird, + φίλος , loving.] Literally, bird- loving; specifically, in bot . , bird-fertilized: ap- plied to flowers in which the pollen is conveyed to the stigma and fertilization accomplished by the agency of birds. The birds that take part in this proce are usually humming-birds, and the flowers are ordinarily large and brilliantly colored, as the blo oms of the trumpet creeper ( Tecoma radicans ), trumpet honey- suckle ( Lonicera sempervirens ), sage ( Salvia splendens ), etc. Ornithophilous - i. e. bird-fertilized - flowers are to be ranked with entomophilous. ornithopod (ôrni-tho-pod), a. and n. [ ornithopus ( -pod- ), όρνις ( όρνιθ- ), a bird, + πούς (ποδ-) = E. foot .] I. a. Having feet like those of a bird; specifically, of or pertaining to the Ornithopod a : as, an ornithopod reptile. Also ornithopod ous . Ornithopod a (ôr-ni-thop'ō-da), n. pl . [NL., neut. pl. of * ornithopus : see ornithopod .] An order of Dinosaur i a , containing extinct herbiv- orous dinosaurs whose hind feet most nearly ap- proached those of birds in structure and func- tion. They were digitigrade, with the fore feet five-toed, the hind feet three or four-toed; they walked on their hind legs and tail, and used their small fore feet as paws. The bones of the hind limbs were hollow, the vertebræ of extinct reptiles presenting many characters inter me- diate between those of Reptilic and Aves , the ornithic modifi- cation being espe- cially well marked in the pelvic arch and limb, whence the name. The ilium ex- tends far in advance of the acetabulum, and is expansive, widely arch- ing over the pelvic cavi- ty as in birds. The slen- der prolonged ischia, in some genera, are ornith- ic in character, and, in Hyps i lop hod on at least, symphysis. The pubes in some genera are as slender and elongated as in a typical bird. The tibia has a great cnemial crest and a ridge for the IMG:content-1866.png:[merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small] were toothle . The leading family is Iguanodon tide ; others are Hadrosauridæ and Hyps i lop hod on tidœ . ornithopod ous (or-ni-thop'ō-dus), a. [As or- nithopod + -ous .] Same as ornithopod. Quart. Jour. Geol. Soc . , XLV. i. 41. Ornithopteridæ (ôrni-thop-ter'i-dē), n. pl. [NL., Ornithopter us + -ide.] A family of fo il bird-like reptiles or birds, represented by the genus Ornithopter us . ornithopter ous (ôr-ni-thop'te-rus), a. [NL. ornithopter us , όρνις ( όρνιθ- ), a bird, + πτερόν = E. feather .] Having wings or fore limbs like those of a bird; bird-winged. Ornithopter us (ôr-ni-thop'te-rus), n . [NL.: see ornithopter ous .] A genus of Mesozoic Sau- ropsida , referred to the order Pterosaur i a , but differing from all other pterodactyls in having only two joints in the ulnar digit, and supposed to belong to the cla Aves . Ornithopus (or-nith'ō-pus), n. [NL., ὄρνις (όρνιθ-), a bird, + πούς (ποδ-) = E. foot .] 1. Α genus of gigantic animals, formerly supposed to be birds, now believed to be dinosaurian rep- tiles, known by their footprints in the Tria ic formation of the Connecticut valley. -2. A ge- nus of plants (Linnæus, 1737) of the order Le- guminosæ, the tribe Hedysareæ , and the subtribe Coronilleæ , known by the obtuse keel. There are leaflets, long-stalked heads of minute flowers, and long, narrow, curving pods. The plants of the genus, especially O. perp us ill us , are called bird's - foot . See bird's - foot . Ornithorhynchidæ (ôrni-thō-ring'ki-dē), n . pl . [NL., Ornithorhynchus + -ida .] A family of monotrematous ornithodelphian oviparous mammals, represented by the genus Ornitho- rhynchus. Only one genus and species is known. sa to receive the ascend I, II, III , IV , digits. ing proce of the astragalus. The distal end of the fibula is sinaller than the proximal, though not so much reduced as in birds. The astragalus, similar to that of a bird, re- mained distinct in many genera; but in some, as Comp- sognathus, Or nit hot ars us, and Euskelosaurus , it seems to have ankylosed with the tibia. The genera of Ornitho- scelida are numerous, ranging throughout the Mesozoic period; the animals are mostly of large size, some of them, as the iguanodon, being among the largest terrestrial ani- mals known. The order is divisible into two suborders, Dinosaur i a and Compsognatha . or nit hos cel i dan (ôrni-thō-sel'i-dan), a . and n. [ Ornithoscelida + -an .] I. a. Pertaining to the Ornithoscelida , or having their characters. Huxley . See Ornithorhynchus. ornithorhynchous (ôrni-tho-ring'kus), a. [ ὄρνις ( όρνιθ- ), a bird, + ῥύγχος , snout, beak, bill.] Having a beak Ornithorhynchus (ôr" ni - thō-ring' kus), n. [NL.: see ornithorhynchous.] 1. The typical and only genus of the family Ornithorhynchida . There is but one species, Ornithorhynchus an at in us , or O. tic habits, living in burrows in the banks of rivers, laying eggs, and feeding on insects, mollusks, and worms. The fact that the animal is oviparous (though not generally fur is thick and soft, of a glo y dark-brown color. The credited till 1884) has long been known, and the egg was figured many years ago. The eggs are about inch long by inch broad, white, with a flexible shell or pod, like a terclavicle. "soft-shelled" hen's egg. See cuts under duckbill and in- 2. [l. c.] An animal of this genus; a duckbill. ornithon (ôr'ni-thon), n. [L. ornithon , ὀρ- νιθών , a house or yard for poultry (and for other birds 1), ὄρνις ( ὀρνιθ- ), a bird: see ornithic.] A building in which birds are kept; an aviary. ornithosaur (or'nith-ō-sar), n. [ ὄρνις (όρ- Ornithopappi (ôrni-tho-pap'i), n. pl . [NL., ved- ), a bird, + σαῦρος , a lizard.] Same as or- Gr. ὄρνις (όρνιθ-), a bird, + πάππος , a little bird so nithosaurian . named.] An order of Jura ic birds repre- Ornithosaur i a (ôr"ni-tho-sâ'ri-a), n . pl . [NL.: sented by the genus Archæopteryx , and consee ornithosaur.] An order of fo il saurians term i no us with the subcla Saururaæ : correor reptiles having ornithic or avian characters: Saurornia. H. G. Seeley. ornithosaur i an (ôr"ni-tho-sa'ri-an), a . and n . I. a. Being a saurian of ornithic affinities; pertaining to the Ornithosaur i a , or having their characters; pterosaurian; pterodactyl. Ornithuræ (ôr-ni-thu'rē), n . pl . [NL., ὄρνις ( όρνιθ- ), a bird, + οὐρά , a tail.] In ornith., a primary division of birds, comprising all those in which the bony tail is short and terminated by a pygostyle: opposed to Saururæ , or lizard- tailed birds. The division includes all known birds excepting Archæopteryx , and is also called Eur hip i dura . [Little used.] ornithurous (ôr-ni-thu ́rus), a . Of or pertain- ing to the Ornithuræ . Ornus (or'nus), n. [NL. (Per so on, 1805), Fraxinus Ornus. See ash1, 1, and Fraxinus . oro-anal (ōrō-ā'nal), a. [Irreg. os ( or ), mouth, + anus , anus.] 1. Being or representing mouth and anus in one, as an orifice in some crinoids. H. A. Nicholson, Zoöl., p. 204.-2. Extending in the direction of the mouth and the anus, as a line or plane of the body: as, the oro - anal axis. Encyc. Brit ., XIX. 434. Orobanchaceæ (or"ō-bang-kā sē-ē), n . pl . [NL., Person a les , distinguished by the one- celled ovary with minute albuminous seeds. It contains about 150 species in 11 genera, of which Oro- banc he is the type. They are leafle herbs of brown, yel- low, purple, and other colors, but never green, with dry Orobanchaceæ flowers in a dense spike or scattered in the axils of dry scales; in one, white and solitary. They are small plants, thickened or fleshy at the base, and parasitic on roots.