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



Specimens examined. — 24 specimens (3 skins), 15 skulls, from 

 the following localities : — 



British Museum : — Costa Rica (2). Nicaragua : Jinotega, 

 1100 m. (1). Guatemala; San Geronimo (1). Jalisco: Ambas 

 Aquas, Tepic (2). Durango : Ventanas (2 juv.). " Mexico "(1). 

 Uncertain locality (1). — 7 skulls, from all the localities represented 

 by adult specimens. 



U.S. National Museum * ; — Oaxaca : Juquila (2). Jalisco : 

 Plantinar (7), Teuchitlan (1 ). Vera Cruz : Mirador (3). Uncertain 

 locality (1). — 8 skulls, from all these localities. 



Range. — Central America, S. and Central Mexico, as far north 

 as Dui-ango. 



Saussure's Stenoderma toltecum, 1860. — The essence of the 

 original description is this : — /S. toltecum is an Artibeus, with 

 |- molars, very short interfemoral (4-5 mm.), the forearm 

 measuring 41 mm., and inhabiting Mexico. The -| molars 

 exclude all Mexican species of the genus exc(^pt A. toltecus, 

 phceotis, aztecus, turpis, and nanus. Of these, A. phceotis and 

 nanus are excluded by their small size, A. aztecus \>j its larger 

 size, A. turjois by its longer interfemoral ; leaA-ing only the species 

 here called A. toltecus, and, from the locality (Mexico), the race 

 A. t. toltecus. 



Artibeus cinereus in Dohson's Catalogue, 1878. — I have examined 

 the four specimens catalogued by Dobson il. s. c.) as Artibeus 

 cinereus; all of them are A. toltecus toltecus. 



Artibeus toltecus ravus Miller. 



1902. Dermanura rava Gevrit S. Miller, Jr., Proc. Acad. N. Sci. Philacl. p. 404 

 (12 Sept. 1902). — Type locality : San Javier, N. Ecuador. 



Diagnosis. — Similar to A. t. toltecus, but facial stripes as a 

 rule distinct or strong, and white edgings to the ears always 

 distinct ; general size averaging smaller : forearm 37"5-39*7 mm. 



A. t. raims and toltecus. — The differences between these two 

 forms have been pointed out in detail above, under the description 

 of A. t. toltecus (pp. 297-299). 



CoZo^tr.— Adult individuals show a darker and lighter phase, 

 closely resembling those of A . ivatsoni : — 



Darker phase : one skin, fully adult, teeth slightly worn (Brit. 

 Mus. no. 1.6.5.5.): — Upper side as in darker-coloured individuals 

 of A. watsoni (see p. 289). Under side distinctly darker than 

 in A. toatsoni, almost broccoli-brown. Facial stripes strong. 

 Whitish ear-edgings veiy distinct. No light tips to the wings. 



Lighter phase : eight skins, fully adult, teeth slightly worn, 

 well worn, or much worn : — Precisely as in light-coloured 

 individuals of A. watsoni (p. 290). Facial stripes as a rule strong, 

 or at least distinct, sometimes indistinct, in none completely 



* U.S. N. M. iios. 5203, 6979, 6C81, 11216, 52082, 52085, 52087-89, 52095-96, 

 52098, 76512, 76515. 



