618 PROCEEDINGS OF THE ACADEMY OF [Dec. , 



ON THE COMMON BROWN BATS OF PENINSULAR FLORIDA AND 

 SOUTHERN CALIFORNIA. 



BY S. N. RHOADS, 



Exaraiuatiou of a series of skins and skulls and alcoholic speci- 

 mens of the Florida Brown Bat, in the author's collection and in 

 the museum of the Academy of Natural Sciences of Philadelphia, 

 shows constant racial diflferences from typical Eptesieus ftiscus of 

 Philadelphia county. These difierences are similar and in the same 

 degree and direction as those separating the two forms of Red Bat 

 inhabiting the regions named. The Florida race may be distin- 

 guished as follows: 

 Eptesieus fuscus osceola subsp. nova. 



Type No. 875, ad. d^, in Coll. of S. N. Rhoads. Taken April 

 29, 1892, at Tarpon Springs, Fla., by W. S. Dickinson, 



Description. — Similar in size and cranial characters to fusciis ; 

 colors deeper and darker, being of slightly varying shades of cin- 

 namon brown as contrasted with the bistre and sepia of fuscus. 

 This character is uniform in a series of eight dry skins which have 

 never been immersed in a liquid preservative, and is peculiar to 

 them in a comparison with a similar series of fifteen topotypes of 

 fuscus. 



Measuretnents of type, made by collector from fresh specimen : 

 Total length 101 mm, ; tail 38 mm. ; hind foot 9^ mm. Average 

 measurements of four topotypes, 113-44-10,6. 



The skull of type indicates it to be an old adult, quite as large 

 as adult skulls of fuscus, but the measurements given by the 

 collector are less than a normal average. This average corresponds 

 -closely with that of ten specimens ot fuscus from Sing Sing, N. Y., 

 as given in Miller's monograph of North American Vespertilionidce. 



Whether this subspecies is found outside the limits of peninsular 

 Florida I am unable to state. As Miller classes the Eptesieus from 

 Alabama, Georgia and Mississippi examined by him under fuscus, 

 I conclude that T^. caroliniensis of Geoffrey cannot apply to the 

 Florida race. 



