JVO. 1924 RODENTS FROM BRITISli KAST AFRICA — HELLRR 3 



Measurements. — Head and body, 76; tail, 54; hind foot, 16.5; 

 ■ear, 12. Skull: condylobasal length, 19.6; basilar length, 16.4; zygo- 

 matic breadth, 11; nasal, 8; interorbital constriction, 3.8; diastema, 

 5.5; mandible, 12.8; maxillary toothrow, 4. 



Appears to be most nearly related to L. triton Thomas. 



SACCOSTOMUS MEARNSI, new species 



Plate 2, /;, Skull, Natural Sizk 



Type from Changamwe, British East Africa; adult male, number 

 162882, U. S. Nat. Mus. ; collected by E. A. Mearns, November 28, 

 1909; original number, 7292. 



Coloration. — -\bove drab gray washed with hair brown, the indi- 

 vidual hairs plumbeous basally, medially light grayish with the tips 

 blackish. Sides more grayish and merging gradually into the light 

 grayish of the underparts. Ears and limbs grayish like the body 

 coloration. Feet whitish. Underparts light gray with a faint buffy 

 wash, the hairs plumbeous basally. Tail dusky brownish above, 

 whitish below. 



Measurements. — Head and body, 156; tail, 65; hind foot, 23; 

 ear, 16. Skull : condylobasal length, 32 ; basilar length, 28.5 ; zygo- 

 matic breadth, 17; nasal, 14.2; interorbital constriction, 4; diastema, 

 10; mandible, 20; maxillary toothrow, 6.4. 



Compared to S. uiashonce of South Africa, to which this species 

 is most nearly related, it differs in its much larger size, and relatively 

 larger hind feet, tail, and skull. It is lighter in coloration without 

 the iron gray efifect to the upperparts and with the underparts con- 

 siderably lighter gray. 



STEATOMYS ATHI, new species 



Plate 2, c, Skull, Natural Size 



Type from the Lukenia Hills, Athi Plains, British East Africa; 

 adult male, number 162883, U. S. Nat. Mus.; collected by J. A. 

 Loring, November 22, 1909 ; original number, 8259. 



Coloration. — Above hair-brown with an intermixture of huffy ; the 

 pelage composed chiefly of huffy hairs with dark brown tips mixed 

 profusely with longer black hairs throughout the median dorsal re- 

 gion. Sides of body a mixture of buft'y and grayish without any 

 blackish hairs, and sharply defined against the pure white of the 

 underparts. Ears dusky, very thinly haired ; a conspicuous white 

 tuft of hair immediately below the opening. Underparts and feet 



