16 Fretp MusEuM oF NATURAL History — Zo6o.ocy, VoL. X. 
feet white, tarsal joint dusky; tail brownish drab above, slightly paler 
below and finely vermiculated with whitish, certain white-tipped 
hairs of the under side sometimes showing from above as a narrow 
whitish border. 
Measurements. Type: Total length 160; head and body 83; 
tail vertebre 77; hind foot (c. u., dry) 15.8; ear 14. Skull of type: 
Greatest length 25; basilar length 18.3; zygomatic breadth 13.6; 
interorbital constriction 3.9; nasals 8.9; postpalatal length 10.5; 
diastema 5; depth from top of braincase to lower surface of audital 
bulla 10; length of upper toothrow 2.9. 
Remarks. Comparison of the above-described ‘form with the type 
of parvus reveals considerable difference in cranial chafacters but 
such color differences as are observable seem due to the fact that the 
type of parvus was preserved originally in alcohol. 
The new form is named for Mr. Guy Dollman, of the British 
Museum, who has lately devoted considerable time to a study of the 
genus Graphiurus. 
Thamnomys oblitus sp. nov. 
Type from Voi, British East Africa. No 17123 Field Museum of 
Natural History. Adult female. Collected April 14, 1906, by E, 
Heller. 
Characters. Allied to Thamnomys macmillani but tail decidedly 
longer and color somewhat deeper; skull slightly smaller. General 
coloration much as in T. s. polionops, but slightly paler with the rump 
more decidedly contrasted with the back, shoulders, and head. 
Anterior upperparts from crown to middle of back clay color slightly 
tinged with olivaceous; posterior back and rump bright ochraceous 
scarcely modified by scattered dusky-tipped hairs; forehead, nose, 
and sides of face olivaceous gray; underparts white distinctly tinged 
with strawcolor except on chin and sides of throat, all the hairs 
with white bases; feet pale buff, at least medially. 
Measurements. Type: Total length 286; head and body 110; 
tail vertebra 176; hind foot (c. u., dry) 22; ear 16. Skull of type: 
Greatest length 27.1; basilar length 20.5; zygomatic breadth 12.5; 
interorbital constriction 4.4; nasals 9.4; interparietal 8.7 x 4.8; 
postpalatal length 9.3; diastema 6.5; palatine slits 5.7; length upper 
toothrow 3.8. 
Remarks, The single specimen representing this species was by 
chance not included with the others recently taken to the British 
Museum for study. Therefore, no actual comparison with 7. mac- 
millani has been made, but the type of that species was carefully 
examined and is still fresh in mind. 
