116 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXII. 



Table of average cranial measurements, in millimeters, of Ilemiderma subrufum. 



HEMIDERMA CASTANEUM (H. Allen) 



Carollia castanea H. Allen, Proc. Am. Philos. Soc, XXVIII, 1890, p. 19, read 



Dec. 6, 1889, printed Feb. 25, 1890, fig.-; Proc. U. S. Nat. Mus., XIII, 1895, 



p. 292, Nov. 15. 

 Ilemiderma castaneum Trovessab.t, Cat. Mamm., 1897, p. 157. — MiLLERand Rehx, 



Proc. Bost. Soc. Nat. Hist., XXX, 1901, p. 233.— Elliot, Field Col. Mu,'^. 



Pub., Zool., 4th Ser., p. 670; VI, p. 516. 



12914 

 Tt/pe- locality. — Costa Rica (Type - specimen, Cat. No. , 



U.S.N.M., male adult preserved in alcohol, with skull removed). 



Geographic dlstrihdion. — Known only from the tj^pe-locality. 



Characters. — The smallest species of the genus (forearm, 35 mm.); 

 skull short (about 20), relatively broad, and lightly built, zj^gomatic 

 processes of the maxillary long and slender; teeth small, the outer 

 edge of the last upper premolar on a line with the internal cusp of the 

 first molar. 



J^ir a7\d color. — Doctor Allen says in the original description: "Fur 

 long and silky. Above, lustrous light chestnut brown at basal one- 

 half and at the tip. The intervening portion is yellow brown (old 

 gold). Below the same colors prevail, excepting that over the abdo- 

 men and pubis the brownish tip is absent and the body of the hair is 

 not golden." Since this was written the skin has been immersed in 

 strong alcohol for sixteen years and the bands of color are no longer 

 distinct, but the rich golden chestnut tinge is still evident. This 

 is probably an individual character, however, as it can be almost 

 exactly matched in specimens of aztecum from Vera Cruz which differ 

 from it very markedly in size and cranial and other characteristics. 

 The distribution of the fur upon the limbs and membranes can not be 

 determined, as they have been rubbed, but there is still a little fur at 

 the base of the thumb and on the toes; interfemoral membrane well 

 furred above on the basal half. 



MimhraMex. — Membranes, brownish; the wing membrane arising 

 from the distal end of the tibia, the interfemoral membrane from the 

 tarsus about 1 mm. lower. Doctor Allen states that the interfemoral 



