helonjitKj to the Genus Croc'ulura. 191 



Skull of type: coiulylo-incisivc Iciif^th 17'Omni. ; greatest 

 Lrcadth 7'H; least interorbital brcadtli t5'9 ; length of 

 ]»alate 7'4 ; postpalatal length 7*9 ; greatest maxillary 

 breadth 54 ; median depth of brain-case 4 ; length of upper 

 tooth-row 7'7. 



Hub. " Small uninhabited island one mile north of Sajitu 

 Island, Vietoria Nyanza." 



7///^e. Adult female. B.^f. no. 2. 7. 5. 0. 



In addition to the type there are two further specimens 

 of cuninyhamei in the collection, one from Kama Island, 

 ^'ictoria Xyauza, and the other from Kampala. 



(108) Crocidura bicolor elyonius, Osg. 



Crocidwn bicolor clgonius, Osgood, Ann. & Mag. Nat. Hist. (8) vol. v. 

 p. 369 (1910)-. 



Rather smaller than cuninyhamei, greyer in colour and 

 with smaller skull. 



Size rather less than in either hiculor or cuninyhamei, 

 liind foot only 9 mm. in length. Fur as short as in the 

 allied forms. Colour of dorsal surface much greyer, general 

 effect between "fuscous'^ and " Chcetura drab," considerably 

 less brown than cuninyhamei. Colour on sides gradually 

 ])aling and passing imperceptibly into the lighter grey of 

 the belly. Lateral gland very small, marked by short white 

 hairs. Backs of hands and feet darker, dirty brownish 

 grey. Tail finely haired, dark sooty brown above, slightly 

 paler below; bristle-hairs more conspicuous, grey throughout, 

 not darker at their bases as in the Victoria Nyanza form. 



Skull smaller, e([ually flat, brain-case rather narrower. 

 Teeth as in cuninyhamei, second and third upper unicuspids 

 slightly smaller. 



Dimensions of type and topotype (J) (measured in the 

 flesh) :— 



Head and body 52, 55 mm. ; tail 38, 44 ; hind foot 9, 9 ; 

 car 8, 6. 



Skull of type : condylo-incisive length 16"7 ; greatest 

 breadth 7"3.; least interorbital breadth 3'2 ; length of 

 palate G'8 ; postpalatal length 8; greatest maxillary breadth 

 4"8 ; deptii of brain-case 4 ; length of upper tooth-row 7'2. 



Hub. Kirui. Mt. Elgon. Altitude 6000 feet. 



Type. Adult female. B.M. no. 10. 4. 1. 47. 



Tlie much more sooty coloration and smaller skull distin- 

 guish this P^lgon race from the Lake form. 



