NO. 5 MAMMALS OF PANAMA — GOLDMAN I93 



LONCHOPHYLLA CONCAVA Goldman 

 ranama Long-tongued Bat 

 [Plate 37, figs. 5, -,0] 

 Lonchophylla coiicafa Goldman, Smiths. Misc. Coll., Vol. 6i, No. 5, p. 2, 

 March 14, 1914. Type from Cana, eastern Panama (altitude 2,000 feet). 



In size, color and general external appearance Lonchophylla coii- 

 cava very closely resembles Glossophaga soricina Icacliii and exami- 

 nation of the sktill is necessary to determine it with certainty. The 

 ears are more pointed, however, and the longer more protruding 

 upper incisors may distinguish it from the GlossopJiaga in specimens 

 with the skulls in place. The forearm of the type measures 33.9 

 millimeters. 



A single specimen of this species was obtained in a limestone cave 

 at about 2,000 feet altitude on the slope of the Pirre Mountains near 

 Cana. The cave was also inhabited by Lonchophylla robnsta, Glosso- 

 phaga soricina Icacliii, Hcmidcrma pcrspicillatum aztccum, Hcuii- 

 derma castancum, and Dcsinodits robitstus murinus. Owing to the 

 remarkable resemblance to Glossophaga s. Icachii the specimen was 

 at first referred to that species. 



In the general form of the skull L. concava closely approaches 

 L. mordax Thomas, the type species of the genus, and exhibits a 

 corresponding departure from L. hcspcria G. M. Allen in which the 

 skull is relatively much narrower and more elongated. The greater 

 attenuation of the rostrum in L. hcspcria leaves the third upper molar 

 implanted well in front of the maxillary processes of the zygoma as in 

 the genus Ch<rronyctcris, instead of in the same horizontal plane with 

 these processes as in L. mordax. On the other hand L. concava 

 approaches L. hcspcria in the narrowness of the second upper pre- 

 molar, the conspicuous inner lobe present in L. mordax being reduced 

 to a slight swelling bearing a small cusp. The aberrant character of 

 L. hcspcria has been pointed out by Miller (191 2, p. 24) who re- 

 marks : " The animal is so different from the other known forms 

 of Lonchophylla that it can hardly be regarded as a meinber of the 

 same genus." Although widely different from L. hcspcria, L. con- 

 cava combines characters which tend to bridge the gap between that 

 species and the more typical forms of the gentis. 



Specimens examined : One. the type. 



Subfamily HEMIDERMINAE 

 Genus HEMIDERMA Gervais 

 The bats of this genus are small or medium-sized species with 

 small nose leaves, rather short, somewhat pofinted ears and tails reach- 

 ing to about the middle of the naked, moderately developed inter- 



