holop1dæ

pl. [Mod. Lat. holop (us); Lat. fem. pl. adj. suff. -idœ.] Zool. & Palæont .: A family of Crinoidea. The species are permanently fixed, but have no stem. ho-lop-tych-i-dæ, ho-lop-tych-1-1-dæ, s. pl . [Mod. Lat. holoptych ( ius ); Lat. fem. pl. adj. suff. -idœ.] Palæont .: In Sir Richard Owen's cla ification a family of ganoidean fishes, sub-order Lep i dog a no ide i. Dr. Traquair places it as a family under the Cro opterygide, defining it as having two dorsal fins; the ventrals subacutely lobate; the scales thick, sculptured. Genera, Holoptychius, Glyptolepis, Dendrodus (?), Cricodus (?). [Pref. holo- , and Gr. ho-lop-tych-I-ŭs, s. ptychios =folded, doubled up; ptys, ptychos=a fold.] Palæont .: A genus of fo il fishes, the typical one of the family Holoptychiide (q. v.). The scales, which are very large, are deeply corrugated, and the bones of the head sculpture and granulated; the teeth are large, conical, and of great density. Found in the Upper Old Red Sandstone of Dura Den, ., in Scotland. hol-ô-pŭs, s. [Pref. holo- (q. v.), and Gr. pous = foot.] marine; gō, pot, holostomata hol-o-stom-a-ta, s. pl. [Pref. holo-, and Greek stomata, pl. of stoma =the mouth.] Zool .: Sea-snails; gasteropodous mollusks, the shells of which have the margin of the aperture entire, and generally covered with a horny or shelly, usually spiral, operculum. The animal has a short, retractile muzzle, and gills pectinated or plumelike. They are generally vegetable feeders. It contains the families: Naticide, Pyramidellidæ, Carthiade, Melaniade, Tur. ritellidæ, Littorinidæ, Paludinidæ, Neritidæ, Turbinidæ, Haliotidae, Fi urellidæ, Calyptræidæ, Patellidæ, Dentaliadæ, and Chitonidæ. hol-o-stom-a-to us, a . [Mod. Lat. or Greek holostomat(a); Eng. suff.- ous .] Zool .: Having the aperture of the mouth entire. Used of gasteropodous mollusks. mouth.] †hol-o-stome, s . [Pref. holo- , and Gr. stoma Zool .: A mollusk of the sub-order Holostomata (q. v.). hair.]