﻿6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 59 



Characters. — Closely allied to insignis, but differing in buffy belly 

 and yellowish tone to upper parts, without any of the russet color 

 so characteristic of that form ; skull similar to insignis, but palatal 

 foramina not elliptical, widest posteriorly and triangular in shape. 



Coloration. — General dorsal coloration tawny, becoming light on 

 the sides where it is tawny-ochraceous ; median dorsal region from 

 middle of back to base of tail marked by a wide black streak ; orbital 

 region blackish; ears broccoli-brown; feet white; underparts och- 

 raceous-buff, the hair plumbeous basally ; chin whitish, the hair light 

 to the roots ; tail broccoli-brown above, whitish below, the underside 

 marked by a faint median dark streak separating the white, and 

 extending nearly to the tip. 



Measurements. — Head and body, 86 mm. ; tail, 105 ; hind foot, 20; 

 ear, 16. Skull : greatest length, 25 ; condylo-incisive length, 22.2 ; 

 basilar length, 18.8; zygomatic breadth, 12.3; interorbital constric- 

 tion, 3.3; nasals, 9x3; palatilar length, 10.5; palatal foramina, 5.4; 

 diastema, 6.4; maxillary toothrow, 4, condylo-incisive length of 

 mandible, 14.3 ; coronoid-angular depth of mandible, 7. 



Named for Mr. A. Blayney Percival, Game Ranger of British 

 East Africa, to whom the writer is greatly indebted for assistance 

 and companionship while at Mt. Uaragess. 



DENDROMUS WHYTEI CAPITIS, new subspecies 

 Lololokui Tree Mouse 



Type from Mt. Lololokui, Mathews Range, British East Africa, 

 altitude, 6000 feet; adult female, number 181792, U. S. Nat. Mus.; 

 collected by Edmund Heller, September 8, 191 1; original number, 

 4263. 



Characters. — Similar to pallescens, but tail longer, feet larger and 

 more whitish ; skull wider interorbitally and larger toothed than 

 pallescens. 



Coloration. — Median dorsal color raw umber ; sides lighter, 

 tawny; feet ochraceous, the toes white; ears raw umber; hair of 

 underparts pure silky white to the roots, in contrast to the ochra- 

 ceous sides; tail uniform broccoli-brown. 



Measurements. — Head and body, 60 mm. ; tail, 88 ; hind foot, 

 16.5 ; ear, 13. Skull : greatest length, 20; condylo-basal length, 17.7; 

 basilar length, 14.8; zygomatic breadth, 10.7; interorbital constric- 

 tion, 3.2; nasals, 7 x 2.4; palatilar length, 8.2; palatal slits, 4; dias- 

 tema, 5 ; maxillary toothrow, 3.3 ; condylo-incisive length of man- 

 dible, 1 1.7; coronoid-angular depth of mandible, 5.6. 



