252 MESSJIS. OLDFIELD THOMAS AND M. A. C. lUNXON OX 



This Shrew is the local representative of C. ui/ansa' and 

 0. sa7'tt7'iv. Resembling" the latter in colour, it is disting-uished 

 from both by its relatively shorter tail. In the type of sunirce, 

 the tail measures only 04 mm. with a head and body measurement 

 of 111 ; but the material in the Museum indicates that sumra' 

 normally has a tail of 75 or 80 mm., which is therefore consider- 

 ably more than half the length of the head and body. 



In this species there seems to be a well-marked Si3xual differ- 

 ence of size — female skulls being usually less, and males more 

 than 28 mm. in condylo-incisive length. 



15. Crocidura hixdei marrexsis, subsp. n. 



o" . 5J!5. Wa.li Kongei, East Central Jebel jNiarra. G200'. 

 2 . 544. Wadi BareX K.W. Jebel Marra. GOOO'. 



Closely resembhng 0. k. diana Dollman, but darker in colour 

 and with a longer tail. 



Size slightly smaller than in diana, but tail cousidei-ably longer 

 (58 mm. instead of 48). Colour of upper parts darker, near the 

 " snuff-brown " of Ridgway. X^nder parts greyish white. Flank- 

 lines of demarcation regular, though not sharply detined. Hands 

 and feet yellowish white above. Tail d:u-k brown above, paler 

 below. 



Skull and teeth nearly as in diana ; tooth-row a little shorter. 

 The unicuspid teeth above without the peculiar narrowing and 

 elongation of their crowns seen in diana. 



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



Head and body 74 mm. ; tail 57 ; hind foot 12-5 ; ear 13. 



Skull (posterior part broken) : condylo-incisive length probably 

 about 23; bi-eadth of brain-case 9*5; least interorbital width 

 4-1 ; tooth-row 9-3. 



Rab. Jebel :Marra, at about 6000'. 



Ti/pe. Adult male. B.M. No. 23. 1. 1. 57. Orioinal Xo. 545. 

 Collected Feb. 27, 1921, at Wadi Kongei, East Central Jebel 

 Marra. 



C. h. diana., described froiu Lake Chad, is apparently the 

 neai'est ally of this Shrew. The darker colour, longer tail, and 

 more normal dentition of viai'yensis force us, however, to treat it 

 as a distinct subspecit's. 



16. Crocidura aridula, sp. n. 



(5.846,861,928. $.872. Kulme, A7adi Aribo. 3300'. 



A grey Shrew resembling C. outleri Thos., but with a longer 

 and unswollen tail. 



Size medium. Tail normal, more than half the length of the 

 head and body. 



Colour of upper parts cold-grey, near the "deep greyish olive " 

 of Eidgway. Under parts white, in sharp contrast with upper 



