. An introduction to the study of mammals living and extinct. Mammals. RHINOCEROTIDjE 407 and reference has already been made to the resemblance l^etween the visceral anatomy of these species. ^ The form of the stomach is very similar to that of the Horse. The liver (Fig. 171) has a comparatively large caudate lobe, but is chiefly remarkable for the peculiar shape of the Spigelian lobe, which mainly consists of a thin strip of tissue, 8 inches long, f inch wide, and \ inch : The small intestine, in place of the villi of i?. unicornis, has throughout the greater part of its length a unifo
. An introduction to the study of mammals living and extinct. Mammals. RHINOCEROTIDjE 407 and reference has already been made to the resemblance l^etween the visceral anatomy of these species. ^ The form of the stomach is very similar to that of the Horse. The liver (Fig. 171) has a comparatively large caudate lobe, but is chiefly remarkable for the peculiar shape of the Spigelian lobe, which mainly consists of a thin strip of tissue, 8 inches long, f inch wide, and \ inch : The small intestine, in place of the villi of i?. unicornis, has throughout the greater part of its length a uniform series of thin and nearly or quite continuous transverse foldings, like the valvules conniventes of the human small intestine. There is no gland behind the foot. s/> ' ^' b. iSa^ Fig. 171.—Posterior aspect of the liver of i?/w?ioceros 'fi&is. re, Right central lobe ; rl, right lateral lobe; Ic, left central lobe ; II, left lateral lobe ; c, caudate lobe ; sp. Spigelian lobe. (Prom Garrod, Proc. Zool. Soc. 1SY3, p. 102.) The post-glenoid and post-tympanic processes of the squamosal do not unite below the auditory meatus. The presence of a lateral nasal diverticulum, like that of the Horses and Tapirs, has been verified only in this species, although it doubtless occurs in the others. Atelodine Ch-oup.—In the adults the incisors and canines quite rudimentary or entirely wanting. Nasal bones thick, rounded and truncated in front. Well-developed anterior and posterior horns in close contact. Skin without any definite permanent folds. The two well-marked existing species are peculiar to the African continent. 1 For the internal anatomy of R. sumatrensis see Garrod, Proc. Zool. Soc. 1873, p. 92 ; and Beddard and Treves, loc. 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 Flower, Willia
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Keywords: ., bookauthorly, bookcentury1800, bookdecade1890, booksubjectmammals
