330 PROCEEDINGS OF THE ACADEMY OF [1898. 



Jalisco, Mexico, April 4, 1892, by E. W. Nelson. Original num- 

 ber 2,389. 



Subspecific characters. — About the size of typical Micronycteris 

 megalotis Gray, but with longer middle finger and apparently lighter 

 color. 



General remarks. — While the Mexican material at hand is fairly 

 satisfactory, lacking only skins for the accurate determination of 

 color characters, the South American series is very deficient. Yet the 

 nine specimens that I refer to true megalotis agree very closely among 

 themselves, and differ fairly constantly from the Mexican form. 

 The color appears to be paler in the Mexican specimens, but as all 

 are preserved in alcohol no special weight can be attached to this 

 fact. The real characters of the two forms are shown in the accom- 

 panying table of measurements. 



Dobson's key to the species of Micronycteris (== ' Schizostoma ') 

 rearranged and extended to include the two new forms just described 

 is as follows : 

 First phalanx of middle finger conspicuously shorter than second ; 



forearm 47 M. behnii (Peters). 



First phalanx of middle finger approximately equal to second ; 

 forearm 30-40. 



Wings from tibise ; metacarpal of thumb about equal to remain- 

 ing parts ; calcar shorter than foot . . M. minuta (Gervais). 

 Wings from tarsus or metatarsus ; metacarpal of thumb much 

 longer than remaining parts ; calcar longer than foot. 



Legs and forearms conspicuously hairy. M. hirsuta (Peters). 

 Legs and forearms essentially bare. 



Ear from meatus about one-half forearm 



M. microtis Miller. 

 Ear from meatus about two-thirds forearm. 



Longest finger 60-64 . M. megalotis megalotis Gray. 

 Longest finger 68-72 . M. megalotis mexicanus Miller. 



Glossophaga longirostris sp. now 



Type. — Adult 9 (skin and skull) No. 8,046, Bangs collection, 

 Santa Marta Mountains (near Santa Marta), Colombia, February 

 10, 1898. Collected by W. W. Brown, Jr. Original number, 60. 



Specific characters. — Much larger than any species hitherto de- 

 scribed ; skull large and greatly elongated, color darker than in 

 either phase of G. soricina. 



