4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. <5o 



and bifid at tip ; from ariel it differs in bifid inner upper incisor and 

 large size of first upper premolar. 



Coloration. — Dorsal haired area ochraceous-buff ; the hair at ex- 

 treme base deep black; underparts lighter, buff in color, the hair 

 deep black on the basal two-thirds of its length; ears naked, clay 

 color ; membranes blackish, narrowly edged by white. 



Measurements. — Head and body, 45 mm.; tail, 31 ; hind foot, 5; 

 ear, 9; forearm, 27.5. 



Skull : Greatest length, 1 1 ; condylo-incisive length, 10.6 ; basilar 

 length, 8.3; zygomatic breadth, 7; interorbital constriction, 3.2; 

 palatilar length (nasal notch), 4.1 ; upper cheek teeth, 2.9; condylo- 

 incisive length of mandible, y.y; coronoid-angular depth of man- 

 dible, 2.8. 



Three specimens of this diminutive Pipistrelle are in the collec- 

 tion. All were collected in the Northern Guaso Nyiro watershed. 



PACHYURA LIXA ^QUATORIA, new subspecies 

 ^Equatorial Pachyura 



Type from the summit of Mt. Sagalla, Taita Hills, British East 

 Africa, altitude 4,000 ft. ; adult male ; No. 181814, U. S. Nat. Mus. ; 

 collected by Edmund Heller, November 19, 191 1 ; original number, 

 4815. 



CJiaracters. — Most closely allied to lixa but differing by larger 

 size, darker coloration and dark colored tail ; fourth upper unicus- 

 pid large and placed in tooth row so that it is visible from the side, 

 the relative size of the unicuspids agrees with lixa and is distinctly 

 different from leucura in which species the fourth is minute and 

 shoved inside the tooth row in the angle between the third and the 

 large premolar, differs further from leucura, its nearest geographical 

 ally, by much smaller size and dark tail. 



Coloration. — Dorsal color uniform slate-gray, underparts distinctly 

 lighter, gray 8 of Ridgway, the two colors rather sharply defined 

 on sides; lateral gland conspicuously marked by an elliptical patch 

 of short white hair ; hair everywhere plumbeous at base ; feet white ; 

 ears and tail slate-gray the latter whitish only on underside for the 

 basal one-half. 



Measurements. — Head and body, 75 mm.; tail, 56; hind foot, 12.5. 



Skull: Post glenoid process to outside edge of incisors, 12; 

 breadth of brain-case, 9.5 ; length of upper tooth row, 8.8 ; condylo- 

 incisive length of mandible, 12.5 ; depth of coronoid process, 5. 



Type unique. Skull broken posteriorly, the whole occipital, audi- 

 tory and sphenoidal portion missing. The third upper unicuspid 



