. Elementary text-book of zoology [electronic resource]. Zoology. GAD us. 337 and the cerato-branchials of the fifth arch form the inferior pharyngeal bones. The vertebral colunni consists of a large number of aniphi-ccelotis verteh-a. The anterior are termed abdominal and the posterior are caudal. All the vertebrae have complete neural arches and neural spines. Most of the abdominal have also transverse processes, which bear a pair of ribs and a pair of more dorsally placed so-called inter- muscular bones. In the caudal vertebrae the transverse processes meet below and form a complete hcetnal
. Elementary text-book of zoology [electronic resource]. Zoology. GAD us. 337 and the cerato-branchials of the fifth arch form the inferior pharyngeal bones. The vertebral colunni consists of a large number of aniphi-ccelotis verteh-a. The anterior are termed abdominal and the posterior are caudal. All the vertebrae have complete neural arches and neural spines. Most of the abdominal have also transverse processes, which bear a pair of ribs and a pair of more dorsally placed so-called inter- muscular bones. In the caudal vertebrae the transverse processes meet below and form a complete hcetnal arch. The median fins are sup- ported on dermal fin-rays, which rest on short ttLrygiophores and inter- spinous bones. Fig. 237.—The Right Pectoral Fin and Girdle of the Cod WITH BOTH Pelvic Fins. {Ad. nat.) a, Appendicular.—The pectoral girdle is attached to the otic region of the skull by the supra-temporal bone. There are three clavicular bones, the sHpra-clavicle, clavicle and post-clavicle, A small scapula and coracoid complete the girdle ; they bear on their posterior border four small brachial ossicles (or ptervgiophores), which in their turn bear the numerous pectoral Jin-rays. The pelvic-girdle is absent, but there is a large basi-pterygium on each side which carries the pelvic fin-rays. The brain is small and differs from that of the skate, Nervous chiefly in the large optic lobes and small cerebral hemis System, pheres. On the other hand, the cerebellum is equally well-developed. The gonads are simple, paired hollow sacs opening by Reproductive, short genital ducts to the exterior. They lie in the abdo- minal cavity. M. 23. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Masterman, Arthur Thomas; Parsons, John Herbert, Sir, 1868-1957, donor; S. H. Lazarus (Firm); University Co
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1901
