1904.] NATURAL SCIENCES OP PHILADELPHIA. 195 



Head. — Rather elongate, depressed; rostrum rather broad. Ears 

 large, rather broad, the lower flap broad and extending forward almost 

 to the corner of the mouth; internal margin evenly arcuate, attached 

 to the head above the posterior corner of the small eye, internal ridge 

 distinct, the inferior lobe truncate ; external margin of the ear basaliy 

 arcuate, a distinct though slight submedian shoulder, distal half faintly 

 arcuate with a subapical concavity which throws into relief the rather 

 blunt though slightly recurved apex. Tragus rather short, the apex 

 blunt and roimded, the external margin with a sUght submedian 

 shoulder; accessory lobe distinct and represented by a curved fold on 

 the internal side parallel with, but distinct from, the main portion of 

 the tragus. Nostrils somewhat inflated, and each svirmounted and in- 

 ternally bordered by a low arcuate row of obscure tubercles. Lateral 

 portions of the muzzle thickened and forming a moderately elevated 

 ridge which gradually passes into the lateral portions of the upper lip. 

 Rostrum surrounded by a high rounded excrescence.^' Labial chin- 

 lappet rather narrow, strongly transverse, the median portion strongly 

 papillose, the superior margin around the semicircular chin-pad bear- 

 ing the largest papillae; inferior margin very faintly concave. Pos- 

 terior chin-lappet a simple flap almost equal to the labial lappet in 

 width, depressed. 



Limbs. — Forearm of moderate length, slightly curved in the proxi- 

 mal portion; thumb rather heavy. Tibia rather heavy and stout (for 

 the genus) ; foot slender, the toes strongly compressed ; calcaneum not 

 quite half as long again as the tibia. 



Membranes and Fur. — Membranes rather tliin but strong, the endo- 

 patagium and mesopatagium with the nerve rami longitudinal; uro- 

 patagium moderately large and with a great number of transverse lines 

 of hair; propatagium deep proximally, margin entirely free. Fur 

 rather thick and rather woolly in character on the lower surface, the 

 throat sparsely haired, the upper surface of the endopatagium with a 

 considerable proximal area furred. Hair on the chin-lappets and 

 muzzle rather setif orm ; ears with an irregular covering of white floccu- 

 lose hairs. 



Color. — This species appears to possess two color phases, which are 

 not quite so clearly defined as in some of the other forms of the genus. 

 Brown phase ■}* above between clove- and vandyke-brown ; below clove- 



'^ This curious outgrowth is exceedingly interesting. It is possibly analogous 

 to the nose-leaf of the Phyllostomatine bats, but this appears to be doubtful, and 

 probably it should be considered as representing a structure similar to that found 

 in some Vesper tilionine bats such as Aritrozous and Corijnorhinus. 



'* From alcohol. 



