1901.] MR. P. E. BEBDARD ON GALAGO GARNETTI. 273 



characteristic of the species, at least of the males of that species. 

 It is quite Hkely therefore that these horny spinelets are equally 

 characteristic of Galar/o r/ametti, though unfortunately through an 

 oversight I am not able to say anything about the sex of the indi- 

 vidual examined by myself. Mr. Sutton held that in Hapalemur 

 " the patch of spines was in reality formed by the hardened 

 secretion of the gland underlying them." In this case the structure 

 could have no possible relation to hair or spines, or to any mam- 

 malian integumental callosities ; they would be rather comparable 

 to the cuticular " hairs " and spines of Arthropods. One argu- 

 ment against Mr. Sutton's view appears to me to be this : the 

 lumen of sebaceous and other integn.mental glands — indeed of all 

 glandular structures — is either circular or oval ; in any case without 

 angles. Now the spinelets of this Galago, as may be readily noted 

 in the more highly magnified drawing (text-fig. 7'2) which I ex- 

 hibit, are distinctly quadrangular ; and the same angular character 

 was noticeable in the arm-spines of Hapalemur. 



Text-fig. 72. 



Galago garnetti. 



Patch of horny outgrowths, more highly magnified. 



A, the main patch ; A', a group of smaller outgrowths. 



It is difficult to imagine that the squeezed-out secretion of a 

 tubular gland would have an angular contour. The existence of 

 a large gland in Hapalemur lying beneath (though as far as I can 

 recollect not exactly corresponding to) the patch of spines lends 

 of course some colour to the view of the glandular origin of the 

 structure in question in that Lemur. After removal of the skin 

 in Galago garnetti, no gland was to be observed beneath the patch 

 of spines. I do not propose to assert the total absence of integu- 

 mental glands in this region ; but no large glandular body compar- 

 able to that of Hapalemur grise^^s was visible. To produce such 



