Image from page 429 of “A treatise on zoology” (1900)

Image from page 429 of “A treatise on zoology” (1900)
KPS Gill
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Identifier: treatiseonzoolo09lank
Title: A treatise on zoology
Year: 1900 (1900s)
Authors: Lankester, E. Ray (Edwin Ray), Sir, 1847-1929 Bather, Francis Arthur, 1863-1934 Goodrich, Edwin S. (Edwin Stephen), 1868-1946
Subjects: Zoology
Publisher: London : A. & C. Black
Contributing Library: Robarts – University of Toronto
Digitizing Sponsor: University of Toronto

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Text Appearing Before Image:
14, branchiostegal;15, subopercular; 16, interopercular; 17, preopercular; 18, angidar; 10, mohyal; 20, cerato-hyal; 21, articular; 22, basihyal; 23, dentary; 24, maxilla; 25, pterygoid; 26, auadrate; 27,parasphenoid. Group B. Colocephali. The head is much compressed, the palatal bones very abnormal,and the place of the premaxilla and maxilla seems to be taken bythe toothed etlimo-vomer and pterygoid. Behind the palato-pterygoid arch is incomplete; the hyomandibular bearing thequadrate is firmly attached to the skull. The opercular bonesare all present, but very small. The mouth is often providedwith very formidable teeth pointing backwards. The branchial 4o8 TELEOSTEI apparatus is usually reduced, and the branchiostegals delicateor absent. The gill-opening is narrowed to a small round aperture,and the gill-clefts small. The pectoral fins, and even the girdle,may be lost. Family Muraenidae. The body is scaleless and generally conspicu-ously coloured. The tail is very long (Fig. 403).

Text Appearing After Image:
Fig. 403.Muraena picta, Ahl. (After Ginither.) Muraena, L. ; Thyrsoidea, Kp. ; Myroconger, Gthr. ; Enchelycore, Kp. ;Lycodontis, McCl. ; Ghannomuraena, Rich. Series 3.Sub-Order 3. SYMBRANCHIFORMES. A small group of very highly specialised fish whose affinitiescannot yet be determined. They have a superficial resemblance tothe Eels, from which they clifier in many important osteologicalcharacters, and in the possession of closed ovisacs. The air-bladderis absent. The skull is like that of the Clupeiformes; the parietalsmeet, the maxillae, however, are almost excluded from the marginof the mouth, and the hyojmlatine arcade is closely fitted tothe narrow, firmly ossified cranium. The trunk being muchlengthened and the tail short, the anus is usually far back, andthere are a large number of vertebrae. In Cliilohranchus the tailis long. Strong parapophyses bear short ribs. The centra areslightly opisthocoelous. S YMBRANCHIFORMES 409 The branchial ojieiiings have joined in a single ventralo

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