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Show 1901.] UROAD-NOSED LEMUR. 125 ensis, I failed to find these structures. I do not lay much stress upon the value of this observation, since it is less satisfactory to deal with dried skins than with the recently dead animal. But the possibility must be borne in mind that these tactile hairs m ay be less constant in the female of certain Lemurs than in the male. And that, therefore, the character to which I refer as possibly distinguishing the two species of Hapalemur-if it really does distinguish the male from the female in II. simus-may not be of great value as a mark of specific difference. The matter must be settled later. Ccecum.-I noticed certain small, but definite, differences in the viscera of the two species of Hapalemur. The alimentary canal Text-fig. 22. Liver of Hapalemur simus. G.B., gall-bladder ; R.C., right central lobe ; E.L., right lateral; L.C., left central; L.L., left lateral; OA., caudate ; Sp., Spigelian. of H. sinms seems to be longer in proportion to the body than in the other species. The specimen of H. simus which I dissected had a body-length (exclusive of tail) of 14 inches, it being thus not much, if any, larger than H. griseus. But the intestinal measurements wTere as nearly as possible double the length of those of the example of H. griseus recorded by myself. In H. simus the several lengths were as follows :-Small intestine 1 ft. 9 inches ; large intestine 2 ft. 4 inches. The alimentary |