370 



MR. J. BI.AND SUTTON ON THE 



[Apr. 19, 



" On [lie inner .side of tlie t'oreann close to the wrist is an oval 

 patch of spine-like proccsps, about one inch long and one third 

 of an inch broad in the middle. The spines are longest in tiie 

 middle portion of the patch, and decrease in length towards both 

 extremities. Examined with a hand-lens they j]resent the appearance 

 of being composed of a number of fine threads closely bound 



Fis. 2. 



■t V'.ti 



my 





The forearm of Chirogalcns coqiiereli, showing the tuft of long hairs. The 

 larger one is the forearm of Lemur catta, showing the raised patch of 

 hairless skin covering the collection of sweat-ducts. The tuft of long 

 hairs is also shown. 



together ; the extremity of the spines is blunt, and the longer ones 

 are somewhat curved and overlaj) each other, 'llie patch of integu- 

 ment which hears these spines is sharply marked off from the sur- 

 rounding integument, and no transitional forms between the hairs 

 of the general body-surface and these peculiar spines could be 

 observed." When the skin of the arm was removed an oval gland 

 of the size and shape of an almond corresponded to this patch of 

 spines on both arms, but no duct could be detected in connexion 

 with the gland. 



These observations possessed for me extreme interest, for I 

 felt assured that the patch of spines was in reality formed by the 

 hardened secretion of the gland underlying them. At once I began 

 to accumulate material for an inquiry into the comb-like organ on 



