548 On new African Mammals. 



Size about as in T. ruddi. Sagittal crest linear, well 

 developed. Nasals rather small, with but slight tendency to 

 lateral re-entrant curves. Occipital plane much more slanted 

 forward than usual, tending toward the condition charac- 

 teristic of Spalax, the plane at an angle to a gnathion — 

 condylar line of about 65°, as compared with about 75° in all 

 the other East-African species; the lambdon above the 

 anterior edge of the external auditory meatus. 



Colour of the single specimen rather dark, the head 

 blackened. 



Dimensions of the type : — 



Hind foot (dry) 29 mm. 



Skull: condylo-basal length 42*5; zygomatic breadth 31"5 ; 

 nasals 15 7x55 ; tip of nasals to lambdon 38 ; brain-case 

 18 X 18-3; upper molar series 8 ; length of bullae 10*5. 



Hab. Embi, near Mt. Kenya. Alt. 5400'. 



Type. Adult male. B.M. no. 0. 6. 1. 41. Original num- 

 ber 30. Collected 8th February, 1900, and presented by 

 Lord Delamere. 



Readily recognizable by its sloping occipital plane. 



Leggada triton, sp. n. 



A large species, allied to L. musculoides and L.fors. 



General colour above about that of Mus musculus, or 

 rather darker. Below greyish, the hairs slaty at base, their 

 ends greyish white with a slight buffy tone ; line of demar- 

 cation on sides not sharply defined. Upper side of hands 

 and feet dark brown. Tail of medium length. 



Skull markedly larger than that of any other known 

 species, its surface smooth and rounded. Supraorbital edges 

 well defined. 



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



Head and body 81 mm. ; tail 51 ; hind foot 16. 



Skull : greatest length 23 mm. (21 in the older type of 

 L. fors) \ greatest breadth 11-5; nasals 9; iuterorbital 

 breadth 4 ; bi'cadth of brain-case 106 ; palatal foramina 5*1 ; 

 upper molar series 3'8. 



Hab. Kirui, Elgon, British East Africa. Alt. 6000'. 



Type. Adult female. Rudd CoUeotion. Original number 

 252. Collected 13th September, 1909, by Robin Kemp. 

 Three specimens. 



Readily distinguishable from its allies by the greater size 

 of its skull. 



Leggada sorella, sp. n. 



A large species of the smaller group of the genus, that 

 containing tlie species with a white belly edged with buffy. 



Size approaching that in the L. musculoides group. Fur 



