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Show 374 MR. A. H. GARROD ON LYCAON PICTUS. [Mar. 19, The caecum is quite caniform, its curves being exactly represented m that of Canis familiaris1. The liver is deeply fissured, upon the same plan as in all the Canidae -and all the Carnivora, in fact,-the cystic fissure being very deep, which allows the fundus of the gall-bladder to appear on the diaphragmatic surface of the organ. The left lateral lobe is the largest, the right central and right lateral being slightly smaller. These last are half as large again as the caudate and left central, which are at least four times the bulk of the Spigelian, upon which latter there is a small accessory lobule. In tbe generative organs, as in all Canidae, the prostate is large, whilst Cowper's glands and the vesiculae seminales are absent. The os penis is large, quite straight, four inches in length, and deeply grooved, as in all the Canidae, along its lower surface. In the lungs there are three lobes to the left, and four to the right, one of the latter being azygos. The median lobes of both sides are the smallest; the inferior the largest. The fissures between the lobes are all deep. The brain of Lycaon pictus is perfectly dog-like, resembling that of Canis lupus (as figured by Leuret and Gratiolet2) in almost every detail, the division of the posterior limb of the gyrus third above the Sylvian fissure extending as far forward on the superior cerebral surface as in that species, or even further, the anterior superior angle of the gyrus next below it being rather more strongly developed. The sulcus between the uppermost (or fourth) gyrus and the third is parallel to the great longitudinal fissure between the hemispheres. In Nyctereutes procyonides the tongue is covered with filiform papillae smaller in size than in Lycaon pictus, allowing the proportionally larger fungiform papillae to appear more conspicuously among them. These latter posteriorly become the papillae circum-vallatee, five on each side, larger posteriorly, and arranged in a V-manner. There is no uvula; and the soft palate embraces the upper end of the larynx with facility. The stomach is not peculiar, except that it is more than usually muscular at its pyloric end. In an adult male which died ou the 2nd of February last, the father of a litter of six born on May 2nd 1877, the small intestine measured eight feet; the large, one foot and an inch, the caecum being two inches long, rounded at the end, and slightly turned to the left side apically. It is figured in the accompanying sketch. In three other specimens, not adult, the following were the intestinal lengths :- 1 Vide P. Z. S. 1873, p. 748, fig. 13. a Anatomie comparee du Systeme Nerveux (Paris : 1839-1857), pl- iv. fig. Loup. |