1904.] NATURAL SCTKNCKS OF PHILADELPHIA. 201 



mouth, at which point it rather abriii)tly and squarely terminates. 

 Tragus sublanceolate; apex acutely produced: external margin evenly 

 rounded, with a shght emargination and thickening of the proximal 

 portion; internal margin thickened and bearing a slight accessory lobe, 

 which takes the form of a subarcuate longitudinal thickening of the 

 internal margin. Nose, a distance back from the nostrils, with a rather 

 low, rounded, subtransverse excrescence, anterior from which extend 

 three impressed lines, the lateral ones strong, extending down to and 

 flanking the nostrils, median one fainter and dividing the nostrils. 

 Nostrils subovate, each crowned by a very low transverse fleshy ridge, 

 each bearing several very poorly defined flat disk-like structures; 

 median line between the nostrils flanked by a row of several indistinct 

 nodular processes. Labial chin-lappet strongly transverse, arcuate; 

 lateral portions without papilla; median portion strongly and very 

 distinctly papillose, and margined superiorly by a semicircular imim- 

 }:)ressed area. Posterior chin-lappet a simple adpressed fold half the 

 wddth of the labial chin-lappet. 



Limbs. — Forearm moderately long, slightly and evenly bowed; third 

 digit of medium length. Forearm, tibise and feet rather robust, the 

 toes occupying about half the length of the foot; calcaneum rather 

 short, exceeding the tibise by a fifth the length of the latter. 



Membranes and Fur. — Membranes leathery, but not heavy; veins 

 of the endopatagium and mesopatagium regularly longitudinal, those 

 of uropatagium irregularly radiating from the point of exit of the tail ; 

 uropatagium large; propatagium deep, free its entire length. Fur 

 uniformly distributed over the body, and extending a moderate dis- 

 tance on the endopatagium, both above and below; hair around the 

 muzzle rather setiform in character. 



Color." — Above mars-brown, with a slight hoary frosting posteriorly; 

 below prout's-brown posteriorly suffused with pale ochraceous. Mem- 

 branes sepia. The red phase is also present in this species, as both 

 Wagner and Dobson mention it. 



Wagner possessed two specimens, one in each phase. He describes 

 the red phase as follows: The color of the tipper and the tinder side 

 is a uniform rusty cinnamon-red, that of the upper side of the body by 

 the nape and the breast brighter, on the belly lighter with scat- 

 tered spots of light brown. On the upper side the hair is tmicolor for 

 its entire length ; on the belly the greater under part is dark with lighter 

 tips. The flying membranes are brownish, the nails of the hind foot 

 soiled horn-brown. The second example is a dark color. 



^' From one Nicaragua skin. 



