290 DR. KNUD ANDERSEN ON BATS. [Apr. 7, 



Lighter stage ; 2 skins, Bogava (Oliiriqui) and Sevilla I. ; 

 full-grown, teeth unworn, epiphyses o£ metacarpals ossified. — 

 Upper side wood-brown, washed with a slightly darker shade on 

 the hinder back ; base of hairs ecru-drab on the hinder back, 

 whitish washed with ecru-drab in front of the shoulders. Under 

 side lighter wood-brown. Facial stripes strong. Narrow white 

 edgings to the ears. No light-coloured tips to the wings. — The 

 two specimens are almost alike in colour, rather strongly con- 

 trasting with the four described above. 



Measurements. — On p. 289. 



Specimens examined. — 9 specimens (two in alcohol, one skin in 

 alcohol, six dried skins) with skulls, from the following localities: — 



British Museum : — Bogava, Ohiriqui, Panama (5) ; Oebaco I., 

 Panama (2); Sevilla I., Panama (1). 



U.S. National Museum* : — Escondido River, Nicaragua (1). 



Range. — Centi^al America (Panama, Nicaragua). 



Artibeus cinereus Gervais. 



Diagnosis. — Molars f . Cusp 7 of m^ relatively small, m' equal 

 to about I or | the area of m\ Forearm 39-44 mm. 



Skull. — Not differing in shape from that of A. glaucus and 

 watsoni ; also the linear dimensions are, in every respect, very 

 nearly the same as in those species. 



Teeth (text-fig. 54). — The teeth bear still more decisive evidence 

 of the very close relationship between A . cineretis and A . glaucus 

 and watsoni. As in these latter, cihsp 7 of m^ is relatively/ small, 



Text-fio-. 54. 



Artibeus cinereus cinereus, S ^^- Pava. B.M. 1.7.19.3. 

 Eight upper tootli-row (note small cusp 7 of m^). X y. 



equal to from one ninth to one seventh the bulk of the whole 

 tooth ; at least on average it is, no doubt, a trifle more developed 

 than in glaucus and watsoni, but not nearly as in toltectcs and 

 aztecus. — The teeth differ only in the following points, of minor 

 importance : — 



nig (rudimentary in glaiccus and vxitsoni) has completely dis- 

 appeared ; 16 skulls, representing both of the races of A. cinereus 



* U.S. N. M. no. 51544. 



