OCR Text |
Show 238 MR. F. E. BEDDARD ON [Apr. 7, slightly " puckered " in the same way, and posteriorly run parallel each other "like railway-lines"; but in Dolichotis the intestine is sacculated between these two bands, which causes the appearance of a number of transverse ridges between them like railway-sleepers. The csecum has externally, as in Erethizon, three longitudinal bands ; its extremity is blunt. The liver is not unlike that of the Porcupine, though the proportions Fig. 2. Portion of colon and caecum of Bolichotis patagonica. a, valve of colon; Ccec, commencement of csecum ; S.I., small intestine; Col., colon. of the lobes are a little different. The left lateral lobe is the largest; the right and left centrals are about equal to each other and to the right lateral ; the lobes are not much divided, the caudate and Spigelian are well-marked; a gall-bladder, so variable in its occurrence in Rodents, is present. The heart gives off one innominate artery. The lungs are made up of two lobes on the left and three on the right side besides the lobus impar ; the upper lobe of the left side is nearly divided into two. The right kidney is a little in advance of the left, about half an inch. The generative organs have large vesiculse seminales, each about 3 inches in length. |