neio 2Iammah fro)a Chin'qid. oil 



and tail, is slightly longer and more woolly than is usual in 

 C. hypoleucus. 



Skull and dentition as in the allied form. 



Dimensions of the type (measured in the flesh) : — 



Head and body 450 millim.; tail 510; hind foot 123. 



Skull: greatest length 91, basal length 6-4*5; length of 

 u})per cheek-teeth 22-3. 



Hah. Boquete, 4000 feet. 



Ti/pe. Adult female. B.M. no. 3. 3. 3. 13. Original 

 number 113. Collected 15th October, 1902. 



Such are the characters of two female specimens, and I 

 have no hesitation in saying that they cannot be referred to 

 C. hypoleucus, the only Cehus hitherto recognized in Central 

 America, much as they resemble it. The British Museum 

 possesses a number of examples of both sexes from other 

 localities, and the females show no tendency to a greater 

 frontal development of hair than the males. 



But with the females sent by Mr. Watson are two 

 skins, marked as males, and apparently correctly so. But 

 these specimens have their heads short-haired, exactly as in 

 ordinary C. hypoleucus, from which they only differ exter- 

 nally by their white parts being a clearer and less yellowish 

 white than in that animal. But their canine teeth are quite 

 small, as though they were females, in fact barely larger 

 than in the females sent with them. 



The interesting problem therefore remains to be settled as 

 to whether these specimens, which come from exactly the 

 same place as the females, are really wrongly sexed females 

 of C. hypoleucus y or whether the male C. imitator differs in 

 its frontal covering from its female and in its small canines 

 from all other Cehi. 



Diclidurus virgo, sp. n. 



As in D, alhusj but with differently shaped incisors and 

 premolars. 



General characters as described in D. albus by Dobson, 

 whose account is based in part on a Central-Ainerican ex- 

 ample *. Colour above either pure white to the roots of the 

 hairs, or grey-mixed, the hairs being then slaty at base. 

 Below the hairs on the belly are always broadly slaty for 

 their basal halves ; those on the chin and sides of body pure 

 white. 



* Specimen a of the ' Catalogue of Chiroptera,' p. 392, is not from 

 "South America," but is the example from Pueblo Nuevo, N.W. 

 Panama, mentioned in the '• Voyage of the 'Sulphur.' " 



