. An introduction to zoology [microform] : for the use of high schools. Zoology; Zoologie. i ' t i 1 82 HIGH SCHOOL Fig. 60.—Skull of Menobranch, from below. (After Huxley). pmx. nremaxilla ; vo. vomer ; mck. Meckel's cartilajfe ; pi. palatine ; ps. para- spiietioia; hy. hyoid; sq. squamosal; pro. prootio; St. staphs ; epo. epiotia 4. Tlie skull retains more cartilage than does that of the cat- fish, and there are fewer bones to be recognised in it. (Figs. 59 and 60). Of the twenty-seven cranial bones present in the catfish (I, 17-20), only thirteen are represented, viz.,—paired exoc
. An introduction to zoology [microform] : for the use of high schools. Zoology; Zoologie. i ' t i 1 82 HIGH SCHOOL Fig. 60.—Skull of Menobranch, from below. (After Huxley). pmx. nremaxilla ; vo. vomer ; mck. Meckel's cartilajfe ; pi. palatine ; ps. para- spiietioia; hy. hyoid; sq. squamosal; pro. prootio; St. staphs ; epo. epiotia 4. Tlie skull retains more cartilage than does that of the cat- fish, and there are fewer bones to be recognised in it. (Figs. 59 and 60). Of the twenty-seven cranial bones present in the catfish (I, 17-20), only thirteen are represented, viz.,—paired exoc- cipitals, epiotics, prootics, frontals, parietals and vomers, and an unpaired parasphenoid. Some of the other bones are represented by cartiUge such as the mesethmoid and parethmoid ; the nasal capsule also is a fenestrated cartilaginous capsule, but the other regions are only membranous. Two new bones are pre- sent, the squamosal and the suspensorium on each side, which lie on tho outside of the otic caj)sule, and thus occupy somewhat the same position as the pterotic and preoperculum. As to the jaws, Meckel's cartilage is furnished with a dentary and an inner splenial bone, and it is hung to the skull by the Suspensorium, a cartilage which corresponds to tho hyomandi- bular and quadrate of the catfish. Part of tho hyomandibular. 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 Wright, R. Ramsay (Robert Ramsay), 1852-1933. Toronto : Copp, Clark
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
