NEW BATS FROM PANAMA — HANDLEY 



475 



3, USNM; Sierra Laguna, Baja California, 1, USNM; Escuinapa, 

 Sinaloa, 1, AMNH. 



Lasiurus floridanus Miller: Type locality, Lake Kissimmee, Osceola 

 County, Florida, diagnosis: dorsum buffy yellow, lightly washed 

 with black (similar to xantkinus; paler, less orange and with more 

 black than intermedins) ; hairs of interfemoral membrane not contrast- 

 ing with remainder of dorsum; face blackish; undcrparts similar to 

 dorsum in coloration. Body size large, specimens examined: a 



Table 3. — Differentiating characters of (he species groups of the genus Lasiurus 



Red bats (L. borealis, 

 etc.) 



Hoary bats (L. cinereus, 

 etc.) 



Yellow bats (L. ega, 

 etc.) 



Size small (forearm 

 37-44 mm.) 



Lateral wings of pre- 

 sternum equal to body 

 of presternum in width 



Presternum about as 

 long as wide 



Auditory bullae not 

 enlarged 



Rostrum relatively 

 short 



Sagittal crest very 



weak 



Coronoid process medi- 

 um height 



P 1 usually present 



Hypocone slightly re- 

 duced on M 1 and M 2 



M 3 very reduced 



P* double rooted 



Ma talonid reduced 



Size large (forearm 

 46-57 mm.) 



Lateral wings of pre- 

 sternum equal to body 

 of presternum in width 



Presternum much longer 

 than wide 



Auditory bullae slightly 

 enlarged 



Rostrum medium 



Sagittal crest weak 

 Coronoid process low 



P 1 usually present 



Hypocone much re- 

 duced on M 1 and M 1 



M 3 reduced 



P* single rooted 



Mi talonid only slightly 

 reduced 



Size large (forearm 

 44-57 mm.) 



Lateral wings of pre- 

 sternum considerably 

 broader than body of 

 presternum 



Presternum about as 

 long as wide 



Auditory bullae not 

 enlarged 



Rostrum relatively 

 long 



Sagittal crest strong 



Coronoid process high 



P 1 always absent 



Hypocone slightly re- 

 duced on M 1 and M 8 



M 3 slightly reduced 



P« double rooted 



M| talonid much re- 

 duced 



