232 



MR. R. 1. POCOCE ON THE 



The baculum in Ailantoxerus geUdus, measuring 7 mm., has a 

 still longer proximal portion, or " handle," than in Geosciurus, and 

 the blade is simpler. Its dorsal area is apicallj^ asynimeiirical 

 and not markedly spatulate, and the sides are scarcely constricted, 



Text-iienre 25. 



A. Glans penis of Geoscmrus capensis, from the right side. 



B. The same from the left side. 



C. The same from below. 



D. The same from above. 



E. The same of Muxervs erytliroptis , from the right side. 



F. The same from the left side. 

 Gr. The same from below. 



H. The same from above. 



I. The same of Cynomijs ludovicianus, from the right side. 

 K. The same of Marmota marmota. 



but the median crest seen in Geoscmrus is present. The inferior, 

 crest of the blade is also asymmetrical, curving towards the left 

 inferiorly. (Text-fig. 24, G-I.) 



In Xerus rtttilus the " handle " of the baculum is shorter than 



