176 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



Genus CENTRONYCTERIS Gray 



Similar to Saccopteryx, but more slender in general structure. 

 Skull with the lower border of the orbit so slightly projecting that 

 the toothrow is visible from above, instead of hidden as in Sac- 

 copteryx. The teeth are 32 in number. The genus, mainly South 

 American in distribution, is represented in Panama by a single species. 



CENTRONYCTERIS CENTRALIS Thomas 



Thomas' Bat 



Centronycteris centralis Thomas, Ann. Mag. Nat. Hist., Ser. 8, Vol. 10, 

 p. 638, December, 1912. Type from Bugaba, Chiriqui, Panama (altitude 

 800 feet). 



The only record of this bat is the description of the type, and only 

 known specimen, which was collected in western Panama, at the 

 locality given above, by H. J. Watson. 



The species is " Nearly allied to C. maximiliani, but slightly larger, 

 colour rather darker, and basi-sphenoid pits of skull markedly shorter. 



" Fur long and loose ; hairs of back about 6.5 mm. in length. 

 General colour above dark tawny brown, that of a Para example of 

 C. maximiliani somewhat paler. Basal third of interfemoral well 

 clothed with long hairs." The forearm measurement given is 45 

 millimeters. The species is said to be mainly distinguishable from 

 C. maximiliani by the much shorter basi-sphenoid pits which do not 

 extend forward between the pterygoids as in C. maximiliani of 

 South America. 



Subfamily DICLIDURINAE 

 Genus DICLIDURUS Wied 

 The species of the genus Diclidurus are white, a color very unusual 

 among bats. The ears, unlike those of other genera of the family 

 known to occur in Panama, are short and rounded. The skull 

 presents remarkable features, the braincase, flattened anteriorly, 

 descending abruptly to the rostrum which is very broad and depressed, 

 with elevated lateral margins. There is no wing sac. The teeth are 

 32 in number. 



DICLIDURUS VIRGO Thomas 



Costa Rican White Bat 



Diclidurus virgo Thomas, Ann. Mag. Nat. Hist., Ser. 7, Vol. 11, p. 377, April, 

 1903. Type from Escazu, Costa Rica. 



The Costa Rican white bat was not met with by me, but in the 

 original account of the species Mr. Oldfield Thomas records speci- 



