On the African Shrews belonging to Crocidura. 357 



XLV. — On the African Shrews belonging to the Genus 

 Crocidura. — V. By Guv Dollman. 



[Continued from p. 146.] 



Group 11 (nigricans). 



Size medium. Colour above greyish or dark blackish brown. 

 Second upper unicuspids rather broader than third. 



(64) Crocidura boydi, sp. n. 



Allied to arethusa and nigricans, but distinguished by its 

 skull, which has a much shorter and blunter muzzle and 

 considerably shorter tooth-row. 



Size rather smaller, hind foot only 11 mm. in length. 



Colour of upper parts greyish brown (" mouse-grey }> 

 mixed with "mummy-brown"), the grey hair-buses rather 

 less conspicuous. Underparts whitish, strongly contrasting 

 with the brownish grey of the flanks. Backs of hands and 

 feet whitish. Tail short, rather coarsely haired, brown 

 above, dirty buff below ; bristle-hairs numerous, evenly dis- 

 tributed throughout the entire length of the tail, white in 

 colour. 



Skull with very short broad muzzle, much shorter than 

 in arethusa. Small upper unicuspids crushed together, the 

 second appearing a trifle broader than the third and its cusp 

 longer. 



Dimensions of the type (measured in the flesh) : — 



Head and body 80 mm. (stretched) ; tail 38 ; hind foot 

 11 ; ear 6. 



Skull (brain-case broken) : least interorbital breadth 45 ; 

 length of palate 8'6 ; greatest maxillary breadth 78 ; length 

 of upper tooth -row 9. 



Hob. Titebbi, Welle River. 



Type. Adult female. B.M. no. 7. 7. 8. 52. Original 

 number 103. Collected on June 19th, 1906, by the late 

 Captain Boyd Alexander during the Alexander-Gosling 

 Expedition. 



The smaller hind feet, shorter tail, and much shorter 

 muzzle and tooth-row distinguish this Welle River species 

 from the Nigerian arethusa. The unicuspids are more as in 

 nigricans, the second being rather larger than the third ; on 

 this account it has been thought best to place this Welle 

 River species between the arethusa group and nigricans. 



