VERTEBRATA FROM MADAGASCAR. 513 



MOLOSSIDAE. 



8. Chaerephon leucostigma, sp. nov. White-shouldered Bat. 



Type— Skin and skull. Adult 9 M. C. Z. 16,344, Tananarive, 

 Madagascar, December, 1915. Gift of F. R. Wulsin. 



General characters. — A medium-sized species (forearm 42.5^44.5), 

 rich dark reddish brown above, paling to greyish brown on the sides; 

 entire midventral area from chin to anus, and a streak at the base of 

 humerus whitish. Anterior upper premolar minute, in the outer 

 angle between canine and posterior premolar. 



Color. — Upper parts, from forehead to base of tail a rich dark 

 reddish brown, between 'auburn' and 'mars brown' of Ridgway, 1912. 

 Along the sides of the body this color pales to a 'wood brown'. Mid- 

 ventral area from the practically naked chin to the root of the tail, 

 and an elongated spot at the axilla, white or whitish. The mem- 

 branes are dark, except for a narrow whitish area, visible from the 

 lower side, between the forearm and fifth finger. They are naked 

 except for a narrow line of reddish brown hairs along the outer margin 

 of the front of the ear and a line along the outer edge of the forearm. 



Skull. — The skull is provided with a prominent sagittal crest, 

 which in the type, though partly broken, must have been at least a 

 millimeter high. The upper incisors are separated by a narrow space, 

 and their inner edges parallel; face of the upper canines broadly 

 grooved. The anterior upper premolar is very minute, scarcely 

 equalling the cingulum of the canine. It is wedged in the outer angle 

 between the canine and the large posterior premolar, both of which 

 are in contact on the line of the tooth-row. The lower incisors are 

 probably four in number (though the type and paratype lack the 

 outer left-hand tooth). They are distinctly bifid, the inner lobe 

 larger than the outer, and the inner incisor of each side slightly over- 

 lapping the smaller outer tooth. The cingula of the lower canines 

 nearly meet well above these minute incisors. 



Measurements. — Of the dimensions that follow, the first is in each 

 case that of the type, 16,344; the second that of the paratype, 16,345. 

 Total length, dry skin, 102, 100 mm.; forearm, 44.5, 42.5; thumb 

 9.3, 8; third metacarpal, 45.5, 42.5; first phalanx (3d digit), 20.4, 

 18.7; second phalanx (3d digit), 20.5, 18.7; fifth metacarpal, 29, 28; 

 fifth finger, 47.5, 44.5; tibia, 18, 16; hind foot, 13.2, 11.6. 



Skull of type: — greatest length, vertex to front of i^, 22.2 mm.; 



