1891.] MR. F. E. BEDDARD ON HAPALEMI3R GRISEUS. 449 



usually head downwards, but in whatever position they may be the 

 head and fore part of the body is raised. They sciamble about very 

 quickly, but like all lizards soon exhaust themselves and can thea be 

 easily taken. They permit persons to approach near to them when first 

 discovered, but soon become alarmed. When on trees, like squirrels 

 and woodpeckers, they have a habit of placing themselves on the 

 opposite side to the one in view. They live on spiders, beetles,' and 

 caterpillars, and in captivity eat cockroaches with avidity, managing 

 sometimes to swallow very large ones. In confiuement they have laid 

 cylindrical-shaped eg^s an inch long, covered with tough, white, 

 slightly ribbed, parchment-like skin. 



7. Additional Notes upon Hapalemur griseus. By Frank E. 

 Beddard^ M.A., Prosector to the Society. 



[Eeceived June 15, 1891.] 



In the 'Proceedings' of this Society for 1884 (p. 391 et seqq.) I 

 published a few notes upon the external characters and visceral 

 anatomy of Hapalemur griseus. Since that date I have had the 

 opportunity of dissecting two other examples of this Lemur, and am 

 able to supplement my former paper with some account of the 

 brain and the muscular system. Unfortunately both these indi- 

 viduals were, like the one which I first dissected, males. It is very 

 desirable that the condition of the patch of modified integument 

 upon the arms, so characteristic a feature of this animal, should be 

 figured in the female. It was first figured for the male Hapalemur 

 griseus by myself, and subsequently by Mr. Bland Sutton^ ; but 

 although Mr. Sutton's figure supplemented my own in directing 

 attention to a tuft of long hairs, overlooked by myself, in the neigh- 

 bourhood of the patch of spines, we both of us omitted to observe 

 one detail which will be noticed in the accompanying drawing 

 (fig. 1, p. 450). In the specimen before me the patch of spines 

 is very well and equally developed upon both arms; it extends 

 down as far as the naked skin of the palm of the hand, being thus 

 more extensive than in the former examples figured by myself and 

 by Mr. Sutton ; towards the middle of the patch the spines were 

 distinctly longer than elsewhere ; to the outside of the patch, on 

 both arms there was a smallish oval tract of thick skin like one of 

 the pads on the palm of the hand, with lines running transversely 

 to its long axis. Both I myself and Mr. Sutton had failed to notice 

 this callous pad. On re-examining the skin of the individual which 

 I first dissected, I have found indications of this pad, which is, 

 however, not at all clear in the dried skin. I fancy that it must 

 also have been inconspicuous before the skin was removed ; it is so 

 plain in the specimen before me, that I cannot understand having 



' " On the Ai'in-gland of Lemurs," P. Z. S. 1887, p. 391. See also Journ. of 

 Coiup. Med. and Sui-gery, vol. viii. j,. 22. 



