232 Messrs. ^\. A. C. Hinton and W. P. PycraFt on 



XXVITI. — Description of a new Baboon. 

 \\y Lord Rothschild, BMl.S. 



Maimon hurlacei, sp. n. 



The species is somewliat intermediate between the drill 

 and the mandrill, and justifies the removal of the drill from 

 the genus Papio to that of Maimon. 



S adult. — Differs from the mandrill in the pelage being 

 darker and the annulation of the hairs less extended and 

 fainter. The sides of the neck and heard much more rufous, 

 not yellow, more as in very young individuals of the mandrill, 

 not yellow as in adult mandrill. The long yellow chest- 

 mane of the adult mandrill is absent. The hair on the 

 buttocks is dark brown, not silvery grey. The dull olivaceous 

 wash of the drill is absent. 



Skull. — Differs from drill in the crests supporting the facial 

 callosities not being constricted, but these crests are flatter in 

 front tban in the mandrill. The short palate and short 

 rounded nasal foramina entirely resemble these parts in the 

 drill. It also resembles the drill in the shorter, more rounded 

 occipital area and the shorter occipital crest. 



C'ength of skull from foramen m ignum to base of incisors 

 157 mm.; zygomatic breadth 119 mm. ; eheek-teeth 53 mm. 

 ]\laudrill : length of skull from foramen magnum to base of 

 incisors 177 mm.; zygomatic breadth 126 mm.; cheek-teeth 

 53"5 mm. Drill: length of skull from foramen magnum to 

 Ifase of incisors 156 mm. ; zygomatic breadth 127 mm. ; 

 cheek-teeth 54 ram. 



Loc. I'itye, Ja River, Camaroons (Rowland Ward 

 Trustees). 



Type in British Museum. 



XXIX. — Preliminary Note on the Affinities of the Oenus 

 Lipotes. By Martin A. C. Hinton and W. P. Pycraft. 



(Published by permission of the Trustees of the British Museum.) 



In 1918 Miller (Smithsonian Misc. Coll. Ixviii. no. 9) described 

 a remarkable river-dolphin inhabiting the Tung Ting Lake, 

 about 600 miles up the Yangtze River, China. Establishing 

 a new genus and species — Lipotes vexillifer — for this creature, 



