I96 SMITHSONIAN. MISCELLANEOUS COLLECTIONS VOL. 69 



the railroad line several miles below the mines contains hundreds 

 during the day, and is also inhabited by Desmodus rotundas murinus, 

 Glossophaga soricina leachii, Lonchophylla robusta, Lonchophylla 

 concava and Hemiderma castaneum. 



Specimens collected by W. W. Brown, Jr., on San Miguel Island 

 and at Bugaba, Chiriqui, have been recorded by Bangs (1901, p. 644, 

 1902, p. 50) who remarks that the series of 13 specimens from the 

 latter locality " presents a wide range in the color of the upper parts, 

 varying from hair-brown to russet, with every intermediate shade." 

 Seventeen specimens obtained at Boqueron by J. H. Batty are listed 

 by Allen (1904, p. 78). Examples taken by the same collector are 

 recorded by Thomas (1903a, p. 39) from the following small islands 

 off" the south coast of western Panama ; Sevilla, Jicaron, Gobernador, 

 Brava, Insolita, and Cebaco. Hahn (1907) in his revision of the 

 genus, published records of specimens examined by him from 

 Panama (city), Boqueron, and Colon. Seven examples from Panama 

 (city), as shown by Hahn (1907, p. 112) had been erroneously 

 assigned by Bangs (1906, p. 213) to Hemiderma castaneum. 



Specimens examined: Balboa, 1 ; Bas Obispo, 12; Boqueron, 3 1 ; 

 Bugaba, 13 L *; Cana, 23; Corozal, 13; Empire, 8; Old Panama, 20; 

 Panama (city), 9*; Porto Bello, 6; Real de Santa Maria, I 1 ; Rio 

 Chilibrillo (Chilibrillo cave, near Alhajuela), 10 3 ; Rio Trinidad 

 (Agua Clara), 4; Rio Indio, 1 ; San Miguel Island, 1 ; Tacarcuna, 

 4 1 ; Tapalisa, i. 1 



HEMIDERMA CASTANEUM (H. Allen) 



Chestnut Short-tailed Bat 



Carollia castanea H. Allen, Proc. Amer. Philos. Soc, Vol. 18, p. 19, 

 February 25, 1890. Type from Costa Rica. 



The chestnut short-tailed bat resembles Hemiderma perspicillatum 

 aztecum very closely, but is distinguished by smaller size, the forearm 

 measuring about 2,7 millimeters instead of about 42 millimeters, as 

 in the latter species. The difference in size seems still more apparent 

 when skulls of the two species are compared. The smaller Hemi- 

 derma is rare while the larger is probably the most abundant bat 

 throughout the region under consideration. 



In a limestone cave at about 1,500 feet altitude on the mountain 

 side near Cana two of these bats were knocked down along with 

 numerous examples of Hemiderma p. aztecum. Although they occu- 



1 Collection Amer. Mus. Nat. Hist. 



2 Collection Mus. Comp. Zool. 



8 Five in collection Amer. Mus. Nat. Hist. 



