| OCR Text |
Show 1900.1 SOFT ANATOMY OF THE MUSK-OX. 159 3 cm. broad interspace between their dorsal ends \ This interspace is occupied only by soft tissues. The dorsal surface is thus, instead of showing a median edge as in other Cavicornia, flat or even a little concave. The cartilages are ventrally thicker, but end dorsally in thin edges. The ventral portion of the rings is usually 7-8 m m . broad, but towards the sides, where they partly overlap each other in the antero-posterior direction, thev become broader (15-20 m m . ) . ' The lungs of the Musk-ox show on the right side the same division into lobes as in other Cavicornia (Bos, Ovis, Capra) and in Cervicomia (Cervus elaphus, Dama, Capreolus, and Rangifer), but the left lung differs (fig. 12) from all the material (of Ruminants) Lung of the Musk-ox. on hand except Lama glama. The left lung is quite simple, the upper lobe sitting with a broad base on the lower, and there being no trace of a middle lobe (see fig. 12), which latter in the Ruminants (except Lama) enumerated above is very deeply cleft from the lower lobe. Ovibos has thus in this, respect, a very isolated position. The lungs are distinctly lobulated as in Bos. 1 A similar condition is said to take place in the Yak (Bos grunniens Linn.) according to Pagenstecher (Allgem. Zoologie, vol. iii. p. 384). |
