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Show 490 MR. ST. <*. MIVV'IT ON THE LEMURS. [May 20, Dorsal aspect of right manus of Lepilemur musfelinus. of the Lemurinee in developing a sagittal ridge, and in not having the glenoid surface concave transversely and protected externally by a depending zygomatic process. On the other hand the condyle of the mandible has its articular surface quite remarkably prolonged downwards behind the ascending ramus, though the prolongation is much broader relatively (fig. 4, p. 488) than in the Lndrisinee, and is an exaggeration of what is to be seen in Hapalemur. The internal condyle of the humerus is perforated ; and the fourth digit is the longest, both in the manus and in the pes. Thus Lepilemur seems to be that genus of the Lemurinee which most approximates to the Indrisince. It shows some affinities to the Cheirogalei, notably in its elongated naviculare ; but it is also somewhat closely related to Hapalemur. The last-named genus is now represented in the British Museum by a skeleton of Hapalemur simus. I find that this skeleton quite agrees with that in the Paris collection, before noticed by me*, except that the spine of the axis is backwardly produced. * P. Z. S. 1867, p. 960. |