NO. 5 MAMMALS OF PANAMA GOLDMAN 21 5 



from the forms of E. fuscus, and the northern part of its range is 

 overlapped by that of Eptesicus fuscus miradorensis (H. Allen). 

 The exact relationship of E. propinquus to Eptesicus hilarii (Is. 

 Geoff roy) and other South American species is, however, not so 

 clear. 



A small colony of E. propinquus was located in a dark corner of 

 the attic of an old house at San Pablo, a locality now covered by 

 Gatun Lake. The walls of the room had been white-washed and 

 when a window was opened the dark color of the bats rendered them 

 conspicuous. A few individuals of Rhogecssa tumida were clinging 

 to rafters nearby. 



Specimens examined : San Pablo, 3. 



EPTESICUS FUSCUS MIRADORENSIS (H. Allen) 



Mirador Brown Bat 



S[cotophilus] miradorensis H. Allen, Proc. Acad. Nat. Sci. Philadelphia, 

 1866, p. 287. Type from Mirador, Vera Cruz, Mexico. 



The Mirador brown bat is one of the larger forms of Vesperti- 

 lionidae occurring in the region under consideration. It is externally 

 similar to Eptesicus propinquus, but is decidedly larger, the forearm 

 measuring about 50 millimeters in length. It also differs in dark 

 brown instead of blackish color. 



Fig. 20. — Eptesicus fuscus miradorensis. 

 No. 53784, U. S. Nat. Mus. About nat. size. 



Eptesicus f. miradorensis was first made known from Panama by 

 Bangs ( 1902, p. 50) , who noted a single specimen collected by W. W. 

 Brown, Jr., at Boquete, Chiriqui. Allen (1904, p. 78) lists examples 

 taken at the same locality by J. H. Batty. This locality on the 

 southern slope of the Volcan de Chiriqui, in the western part of the 

 republic, marks the southern limit of the known range of Eptesicus 

 fuscus. This species in its several forms is one of the most common 

 in the area to the northward, including the entire United States and 

 adjoining British territory. The skulls of examples from Boquete 



