72 Bulletin American Museum of Natural History. [Vol. XX, 



The dorsal contour of the skull is slightly and evenly convex, except 

 that the nasals and occipital region slope abruptly downward. There 

 is a strongly depressed sinus at the base of the nasals, as in jp. yagouar- 

 oundi. The chief peculiarity of the dentition, aside from the small size 

 of the teeth, is the reduction of the protocone of the upper carnassials, 

 it being barely indicated by a slight bulging of the cingulum. In the 

 F. yagouaroundi and F. eyra groups the protocone is strongly devel- 

 oped. The present skull is that of a middle-aged female, so that the 

 general dimensions are less than would be the case in a very old skull 

 with a highly developed occipital crest. 



Fells panamensis is a member of the yagouaroundi group, 

 distinguished especially by very dark coloration, the convex 

 instead of the flat frontal region of the skull, and the practical 

 absence of the protocone on the upper carnassial. 



33. Conepatus (Marputius) marpurito (Gmelin). One speci- 

 men, male, Boqueron, Oct. 1901. 



34. Putorius (Arctogale) affinis (Gray). One specimen, 

 adult male, Boquete, altitude 5000 feet. On the right side of 

 the head are a few white hairs, scattered singly over the whole 

 side of the head from eye to ear; on the left is a very small 

 oblong white spot just behind the eye, and another somewhat 

 larger white spot in front of the lower base of the ear. 



35. Potos flavus chiriquensis, subsp. nov. 



Mr. Oldfield Thomas in his recent revision (Ann. and Mag. 

 Nat. Hist., (7) Vol. IX, April, 1902, pp. 266-270) of the 

 Kinkajous (Potos flavus group, formerly Cercoleptes caudivol- 

 vulus), has recognized five subspecies, adopting for one of 

 them Martin's name megalotus. It is to be regretted that he 

 did not rule out both of Martin's names, as he did one of them, 

 as unidentifiable. Martin (P. Z. S., 1836, pp. 81-83) had two 

 menagerie specimens, from unknown localities, which differed 

 so much from each other that he thought they might "ulti- 

 mately prove to be distinct species," and proceeded to describe 

 them, naming them respectively Cercoleptes megalotus and 

 Cercoleptes brachyotus. "In distinguishing between the two 

 species of Kinkajous," he considered "it best to drop entirely 



