380 On the African Shreios belonging to Crocidura. 



browner-coloured upper parts. The dark almost uniformly 

 coloured tail separates it externally from the Amala race of 

 jacksoni; the almost equal size of the second and third 

 unicuspids distinguish it at once from lutreola, in which 

 these teeth are as unequal in size as in the fumosa group. 



(93) Crocidura lutreola, Hell. 



Croridtila lutreola, Heller, Smith. Misc. Coll. vol. lx. no. 12, p. 8 

 (1912). 



Closely allied to jacksoni ; in colour very like j. amala, 

 but with darker, not distinctly bicolor tail, and having the 

 third upper unicuspid almost twice the size of the second, 

 in this respect agreeing with some members of the fumosa 

 group. 



Size of body and hind foot about as in jacksoni. 



Colour of dorsal surface seal-brown (" sepia "), flanks 

 equally dark; no grey mottling on the back or flanks. 

 Ventral surface grey washed with brown. Backs of hands 

 and feet brownish. Tail dark seal-brown above, a shade 

 lighter below, but not distinctly bicoloured. 



Skull like that of jacksoni, but narrower across the 

 maxillary region ; second upper unicuspid markedly smaller 

 than third, much more so than in any of the other members 

 of this group, third very broad almost square-shaped in 

 section. In general build the skull is most like that of 

 gracilipes, but the brain-case is higher. 



Dimensions of the type (as given by Heller) : — 



Head and body 70 mm. ; tail 52 ; hind foot 12'5. 



Skull: condylo-incisive length 19; greatest breadth 8*7 ; 

 length of upper tooth-row 8. 



Hab. Mt. Mbololo, Taita Hills, British East Africa. 

 Altitude 5000 feet. 



Type. Adult female. U.S. Nat. Mus. no. 181818. 



The only specimen of lutreola in the Museum Collection 

 is one from the Tsavo River, the coloration and size of the 

 upper unicuspids are exactly as described by Heller. The 

 dimensions of this Tsavo specimen are as follows : — 



Head and body 68 mm. ; tail 50 ; hind foot 13. 



Skull: condylo-incisive length 20'7 ; greatest breadth 9"3 ; 

 least interorbital breadth 4*3 ; length of palate 8*8; post- 

 palatal length 9 ; greatest maxillary breadth 6'2 ; median 

 depth of brain-case 5 ; length of upper tooth-row 8*7. 



The exceptionally large size of the third upper unicuspids 

 render this species quite distinct from all the allied forms. 



[To be continued.] 



