442 bulletin: museum of comparative zoology. 



at their bases, with a short whitish tip so that the slate everywhere 

 shows through and darkens the entire under surface of the body and 

 limbs, becoming especially dominant posteriorly. 



The ears seem unusually small, but may have shrunken unduly. 

 They are covered with minute appressed hairs visible with a hand 

 lens only. Terminal one or two phalanges of the toes whitish. 



Skull. — The skull presents several peculiarities not observed in 

 those of other species examined. The rostrum tapers evenly from the 

 zygomata nearly to a point, as a result of the lateral compression of 

 the tip of the muzzle; the nasals are nearly flat anteriorly, instead of 

 being expanded to form part of the lateral portion of the rostrum; 

 at about half their length they contract and rapidly taper to a blunt 

 point posteriorly, ending about on a level with the back of the first 

 upper molar. The palate terminates in a slight median projection 

 instead of having a smoothly rounded boundary. The upper pre- 

 molar is very small, with about one half the crown area of the posterior- 

 most molar. Bullae not especially prominent. 



Measurements. — The dried skin, well made, measures approximately 

 as follows: — head and body, 74 mm.; tail, 64; hind foot, 18.5 

 (s. u., 17.8); ear (dry), 7. The skull measures: greatest length, 26 

 basal length, 20; palatal length, 10; nasals, 10.2; diastema, 6 

 zygomatic width, 12; mastoid width, 12.9; upper cheek teeth, 

 (alveoli), 3.5. 



Remarks. — This very dark dormouse seems most nearly to resemble 

 G. smithii from the Victoria Nyansa, Speke's Gulf. It agrees with 

 that species in its uniform dark grayish, but differs in having dark 

 instead of white feet; the tail also as well as the body color seems less 

 dark, judging from Thomas's description. The very small naked ear 

 is also a point in common. Possibly G. schivabi is the West African 

 representative of G. smithii. The thick full pelage, uniformly dark 

 coloration, even on the feet, and the cranial characters readily mark 

 this well-defined species which I have named after its discoverer, Rev. 

 George Schwab. 



Thamnomys ochraceus, sp. nov. 



Type. — Skin and skull, M. C. Z., 8126, from the Meru River, near 

 the junction with the northern Guaso Nyiro, British East x\frica, adult 

 male, collected 8 August, 1909, by Glover M. Allen. 



General Characters. — A small pallid form, apparently allied to T. 

 maemiUani from north of Lake Rudolf, and T. oblitus from Voi, but 



