THE EXTERNAL SURFACE OF THE INFERIOR TURBINATED BONE

(AF- TER SAPPEY.) 4, the lacrymal proce ; 5, the ethmold proce . the incus of the higher vertebrates. [I, 12, 14, 202, 207.]—Hyo-sternal b. Of G.St.-Hilaire, the ceratoval D. in fishes, “ [L, 14.]—Myobranchial. Lat., o a lateral i a lingual i a ipostamer ie … arythnéals, thyréals (in ee) Me ae cératohyals (in birds), gla ohyals (in Mammals [G. St.-Hilaire]). The lowermost pieces of the first three branchial arches of fishes, regarded as the homologue of the thyreo-hyals of higher vertebrates. {L, 14, 207.|Hypohyal b. See Basihyal b. (ist def.),—Hypo pharyngeal. “A pair of b's which form the fifth branchial arches in fishes; they underlie the fioor of the eas are usually dentigerous, and represent the cerato-branchial b’s of the other arches. {i 12, 207.| Hypo sphenoid b. pat Or ence err a The pre sphenoid b. in fishes and in the crocodile. (G. St.-Hilaire (L, 14).|~Hypo sternal b. OfG. S Hilaire, the epihyal b. of fishes. [L, 14.]—Hypotympanie oven See drate b. (ist def.)—Hypsiloidb. 1. See Hyoid. 2 In the pl, of Goubaux, the last coccygeal vertebrae, on account of their resemblance to the letter U, ° [L, 13.]—Hypural b. A small fan-shaped b. which succeeds the last caudal vertebra of fishes and aids in supporting the tail. {L, 12, 200.]—Iliac b. See Inium.—Inc is live b., Ineisor b. See Premaxillary b.—Inferior oecipital b. See Ras i occipital b.—Inferior pharyngeal b's. See Hy pharyngeal b's—Inferior sphenoid b. See Basisphe- Pl lricdhi0ieponayAb Intérioritarbinateaub, Lat…, concha inferior. Fr., cornet inférieur. Ger., untere Nasenmuschel. A thin plate of b. attached by its upper margin to the lateral wall of the nose and separating the middle from the inferior meatus. It artleulates with the superior maxilla, and with the lacrymal, ethmoid, and palate b’s. [L, 14: Infra-orbital b’s. Lat., o a infraorbital i a. Fr., 08 so us orbita ires. Syn.: infra-orbital ring. In comparative oat a ring of o icles which forms the lower rim of the orbit. [L, 14, 207.]—In gras sial b. Of G: St.-Hilaire, the orbito-sphenoid b. in fishes. [L, 14.]—Innominate b. Lat., 0s in nomina tum (seu core). Fr.,as innominé. Ger., ungenanntes Bein. It., 0 o in nomina to. Sp., hue so in nomina do. Ab. which, with its fellow of the opposite side and the sacrum and coccyx, forms the bony pelvis. It is made up of the ilium, the ischium, and the os pubis. [L, 142, 172.|—Int ere alary b. Ger., Zwickelbein (1st def.). 1. See Interparietal b. 2. See Opisthoticb. 3. In the pl., see Wormian b's.—Interclavicular b. See INTERCLAVICLE.— Interhyal b. See Stylohyal b.—Inter ischial b. The tuberosity of the ischium when, as in some of the lower vertebrates, it remains distinct through life. [L 13.|—Intermaxillary b. Lat., pars incisa maxillae superior is |So emmer ring], præmaxilla, os inter max ill are. Fr., os intermaxilla ire, intermaxilla ire (in birds [G. St.- Hilaire]). Ger., Zwischenkieferbein. Syn.: premaxillary b., adnasal b. (in fishes and the crocodile), A foetal b. which lies behind the fore part of the superior maxilla, with which it becomes fused. In many of the lower vertebrates it persists as a distinct b. through life, and often joins with its fellow of the opposite side to form a single b., representing that portion ef the superior in axilla of man which bears the incisor teeth. [L, 12, 14, 148, 153.]—Intermuseular. A number of small b’s which are articulated to the dorsal sides of the transverse proce es of the vertebr of fishes and pa upward and outward between the muscles. [L,200.]—Internal cuneiform b. Lat., os cunei for me internum. Fr., 0s cunéiforme interne. Ger., erstes Keilbein. The largest of the cuneiform b's of the foot. It lies on the inner side of the foot, articulating with the scaphoid, the middle cuneiform, and the first and second metatarsal b's, To it is attached in part the tibial is antic us muscle. [L, 142.|—Internal pterygoid b. See Entopterygoid b.—Inter opercular b. Lat., inter operculum. Fr., inter opercule, malléal [G. St.-Hilaire]. Ger., oslinguale, 1, See Hyoid b. 2. See Glo o-hyalb.—Long. Lat., o a longa (seu cylindric a, seu tubulosa). Fr., os longues. Ger., lange Knochen. B's the length of which greatly exceeds their breadth or thickne , They consist of a shaft, which is hollowed out to form a medullary canal, and two extremities. [L, 172.|—Lower-jaw b., Lower maxillary b. See Inferior MAxILLA.—Lunar b. See Semilunar b.—Malar b. Lat., 08 malare (seu zygomaticum [Hallmann]), os zygomaticum anterius [Bojanus]. Fr., 03 malaire, pièce antérieure de l'os jugal [G. St.Hilaire]. Ger., Wan gen be in. Syn.: jugul b. (in lizards, crocodiles, and mammals [Cuvier]), adorbital b, (in the crocodile), A quadrangular b. which forms the most prominent portion of the face, the greater ere of the margin and a portion of the outer wall of the orbit, and thé anterior part of the zygoma. It separates the orbit from the temporal fo a and articulates with the superior maxilla and the temporal, frontal, and sphenoid b's. In the lower vertebrates it may articulate posteriorly with either the quadrate b. or the quadrato-jugal b. [L, 12, 14, 142, 153.]— Mandible b., Mandibular b., Mandibulary b. See Inferior MAXILLA.—Marginal. Certain otherwise unnamed b’s which lie on the radial and ulnar sides of the manus of the Ichthyosauri a. {L, 12.]—Marsupial. Lat., o a marsupial i a. Fr., 0s marsupiaux, Syn.: jan i to res marsupii [ ‘Pwo elongated, ey Tyson). curved b’s which articulate with the anterior edges of the o a pul and run forward, diver; ne nt the layers of the abdominal parietes. They are found in nearly all the Marsupial i a and are believed to he o ifications of the inner pillar of the external abdominal ring. [L, 153.]—Mastoid b. Lat.,os mastoideum. Fr., 0s mas toïdien. Ger., Zit zen be in, Of Owen, the squamosal b. (1st def.); of Hallmann, the