. The Cambridge natural history. Zoology. 240 FISHES articulated to each of its outer extremities the basal cartilage (inetapterygium) of the pelvic fin. Sometimes there is a rudi- ment of a dorsally-directed " iliac " process at each extremity of the girdle, but in no Fish do these processes ever acquire a dorsal connexion with the vertebral column. In the Holocephali the iliac processes are better developed than in any other Fishes, but ventrally the lateral halves of the girdle are united by ligament alone. In the Teleostomi im- portant differences are observable The left half of
. The Cambridge natural history. Zoology. 240 FISHES articulated to each of its outer extremities the basal cartilage (inetapterygium) of the pelvic fin. Sometimes there is a rudi- ment of a dorsally-directed " iliac " process at each extremity of the girdle, but in no Fish do these processes ever acquire a dorsal connexion with the vertebral column. In the Holocephali the iliac processes are better developed than in any other Fishes, but ventrally the lateral halves of the girdle are united by ligament alone. In the Teleostomi im- portant differences are observable The left half of the pelvic jj^ i^qj-]-^ girdles. The primary cartilaginous pectoral girdle now consists of distinct lateral halves vfhich have no ventral connexion In addition, there is developed on the outer. FtG. 142, girille aud the right pelvic fin of Chiloscyllum. meta, Metapterygium ; 2}elv, pelvic girdle. (From Parker and Haswell.) with each other. surface of each half a series of membrane bones, which form. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
