Manimah from Brilish East Africa. 527 



Skull : greatest length 33-6 ; basilar length 27*7 ; coudylo- 

 incisive length STG ; zygomatic breadth 16 ; interorbital 

 breadth 4-7 ; breadth of brain-case (across squamosal region) 

 13; length of nasals 14; palatilar length 15'2 ; width of 

 palate (inside m^) 3 ; length of palatal foramina 8'2 ; length 

 of upper molar series 5*8. 



Hub. Baringo. Altitude 4000 feet. 



Ti/pe. Old male. B.M. no. 10.12.19.30. Original 

 number 1333. Collected on October 7th, 1910. 



This species is readily recognized by the pale greyish-olive 

 colour of the dorsal surface and liglit buffy-grey flanks. 

 The most nearly allied species appears to be E. ugandfe, 

 which agrees with tliis new form as regards the dimensions 

 of the body, but differs in its longer hind foot and tail and 

 rather large skull, in addition to the striking colour differ- 

 ences already referred to. The other Baringo species, 

 described above, apart from its much richer coloration, is at 

 once distinguished bv the smaller size of the hind foot and 

 skull. 



Leygada grata, Thos. 

 J. 1679; ?. 1670. Solai, Mt. Kenya. 



Leggada trifon, Thos. 



c^. 1603, 1615, 1620, 1624, 1626, 1632, 1646, 168 i ; 

 ? . 1528, 1555, 1598, 1610, 1611, 1612, 1613, 1614, 1625, 

 1657, 1671. Solai, Mt. Kenya. 



Thamnomys giyas, sp. n. 



A large richly coloured species with a very massive skull. 



In size and general proportions about as in T. ibeamis, 

 Osg., tail especially long. General colour of back olive- 

 grey washed with tawny buff, the reddish tint increasing 

 posteriorly, on the hind - quarters and rump becoming 

 bright orange-red (tan colour no. 1, ' Repertoire de Cou- 

 leurs^), the general effect being much as in the West 

 African T. rutilans, but rather darker. Head, sides of face, 

 neck, and shoulders washed with yellowish buff". Flanks 

 richly tinted with orange-buff and sharply marked off from 

 the white underparts. Backs of hands and feet buff-coloured. 

 Entire under surface white, tinted with very pale pinkish 

 buff, the general colour appearing as almost white. Tail 

 long and rather more hairy than in T. ibeanus. 



Skull verv large and massive. Brain-case much larger 



