160 



MR. F. E. BEDDARD ON THE 



[June 17, 



though in my original figure I represented the patch of spines as 

 ceasing some little way in front of the wrist — as was indeed the 

 case with the specimen examined. The greater or less extent of 

 the patch may be a question of age. 



But in the second specimen examined by myself (text-fig. 32, 

 p. 159) the patch of spines was quite continuous with the integu- 

 ment covering the palm of the hand. The patch, moreover, was not 

 entirely covered with the longish, squarish, spine-like outgrowths ; 

 a small tract immediately covering the gland was covered with 

 thickened and horny integument, liut of a nature more resembling 

 that upon the palm of the hand. In the female, as the accompany- 

 ing drawing shows well (text-fig. 33), the tract of skin is of quite 

 the same shape as that occurring in the male. But it is uniformly 

 covered with low elevations of a rounded contour which are 

 precisely like those which cover the palm of the hand, except 

 upon the " balls " of the fingers, where the integument is marked 



Text-fig. 33.^ 



Palmar surface of hand and forearm of Sapalemtir griseus, ? . 

 H, carpal vibrissa? ; P, horny patch. 



with fine concentric grooves. The patch in fact appears to be 

 merely an extension backwards of the callous integument of the 

 palm of the hand. This is exactly the same thing that is met 

 with in Lemur catta \ So far, therefore, there is a correspondence 

 in the two sexes of Hapcdemur griseus. And in reality the 

 likeness goes stiU deeper. The spine-like outgrowths of the male 

 are in all probability quite comparable to structures which I have 

 lately described in the hind foot of Galago gaimettP. In this 

 animal, a microscopical investigation of the spines shows that they 

 are merely columnar outgrowths of the horny layer of the integu- 

 ment, and not special structures peculiar to the Lemur. They 



1 Bland-Sutton, loc. cit. p. 370, fie 



2 P. Z. S. 1901, vol. i. p. 271. 



2,.& p. 371, fig. 3. 



