1893-] Allen and Chapman on Trinidad Mammals. 



attic of a neighboring house. Their retreat was invaded and 

 nineteen specimens secured. A short stick was the only weapon 

 necessary to effect a capture, for while their abode was large and 

 light, and access to the outer air was easy, not one took wing but 

 all endeavored to escape by running. Some ran up the rafters 

 to hide beneath the peak of the house; others ran across the 

 floor, going so rapidly that it was difficult to strike them. When 

 at rest they seemed to prefer sticking to a vertical surface rather 

 than hanging after the usual manner of bats. Of the nineteen 

 specimens taken seventeen were females and two males. Sixteen 

 of the females contained a single fcetus each. 



6. Molossus obscurus Geoff r. This species is reprsented 

 by a single specimen preserved in spirits. It is an adult female, 

 and contained a single half-grown fcetus. The specimen meas- 

 ures as follows : forearm, 38 mm. ; third metacarpal, 38 ; tibia, 

 13.2 ; free portion of tail, 17.8. 



A comparison of the measurements of this fully adult female 

 with those given above of M. rufus would seem to indicate that 

 these two forms are specifically distinct. 



This specimen was found with the colony of M. rufus first 

 mentioned. There were evidently other individuals in the same 

 colony, but their smaller size enabled them to secrete themselves 

 in holes from which it was not possible to dislodge them. 



7. Chceronycteris intermedia, sp. nov. 



Similar in size and general proportions to Chceronycteris minor, but with the 

 calcaneum one-half shorter, tibia longer, thumb shorter. Also different in 

 coloration. 



Above snuff-brown, the fur slightly paler basally, not " light grayish brown," as 

 in C. mexicana and C. minor. Below slightly paler than above, about the color 

 of the basal portion of the hairs above. Ears, feet and membranes blackish, 

 naked, except that the fur extends on both surfaces of the wing membranes as 

 far as the elbows, and also along the basal third of the forearm bones on both 

 surfaces. Calcaneum conspicuously shorter, instead of " conspicuously longer, " 

 than the foot. Thumb shorter, tibia longer, than in C. minor. 



Type, No. ffff, ? ad., Princestown, Trinidad, March 28, 1893, coll. of 

 Frank M. Chapman. 



The present species is based on three specimens, a skin and 

 skull, and two examples in alcohol. 



