186 



MR. R. I. POCOCK ON THE EXTERNAL CHARACTERS 



is relatively short and stout, very thick at its proximal end, and 

 grooved throughout its length below. The apex is sharply 

 upcurled and transvei'sely expanded into a hollowed, somewhat 

 basin-shaped disk, the rim of which is interrupted in front by a 

 channel, which is continued as a groove down the front of the 

 upcurved termination of the bone. This structure is perfectly 

 symmetrical in all its parts. (Text-fig. 18, B, E.) 



Text-ficfure 18. 



A. Anal and g;enital area of Gtdo $ ; a., anus witli orifice of anal gland 



on each side; v., vulva. 



B. Lateral view of penis oi Mellivora. 



C. The same of Gulo. 



D. Front view of the tip of the baculum of Gtilo. 



E. The same of Mellivora. 



In Gulo the hacuhtm is relatively long and thin, without any 

 thickening at its proximal end and grooved beneath only at its 

 distal end, where it is gradually and lightly upcurled and decidedly 

 compressed. The apex bears a short, moderately high, com- 

 pressed, longitudinal ci^est, beneath which is a pair of short, 

 condyle-like processes separated by a deep cleft continuous with 

 the groove behind them. These processes are not symmetrical 

 and the crest is not upright. (Text-fig. 18, C, D.) 



