156 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 



Genus VAMPYRODES Thomas. 



1900. Yampyrodes Thomas, Ann. and. Mag. Nat. Hist., 7th ser., V, p. 270. 

 March, 1900 (subgenus of Vampyrops). 



Type-species— Vampyrops caracciolw Thomas. 



Geographic distribution. — Island of Trinidad. 



Number of forms. — The type is the only species yet known. 



Characters.— Similar to Vampyrops, but with only 2-2 upper mo- 

 lars, and these conspicuously differing from each other in form, owing 

 to the reduction of the metacone in the second to a mere trace. 



Species examined. — Yampyrodes caracciolce (Thomas). 



Remarks. — Although Vampyrodes was originally denned as a sub- 

 genus of Vampyrops, it seems quite worthy of recognition as a genus. 

 The third upper molar in Vampyrops is a well-developed tooth, the 

 presence or absence of which would cause, contrary to the condition 

 in Artibeus, a distinct difference in the form of the maxillary at back 

 of toothrow. A character of more importance is furnished by the 

 suppression of the metacone in the second molar. 



Genus VAMPYRESSA Thomas. 



1900. Vampyressa Thomas, Ann. and Mag. Nat. Hist., 7th ser., V, p. 270, 

 March, 1900 (subgenus of Vampyrops). 



Type-species. — Phyllostoma pusillum Wagner. 

 Geographic distribution. — Brazil. 



Number of forms. — The type is the only species thus far dis- 

 covered. 



Characters. — Dental formula : 



-2 3. 1. --3456-. 2-2 1-1 8-2 M 2- 2_„ ft 



12-1.-2-456- ? 2^2' °T^1' *"" 2^2 m 2^~ 28 ' 



2 — 2 

 In general like Vampyrops but molars only » _ „ , their surface 



sculpture much more distinct; middle upper incisor faintly bifid; 

 metacone of m 2 so reduced that the tooth is irregularly pyriform in 

 outline, the narrower portion (paracone) outward; first lower molar 

 without cusps on inner side, the general appearance of the tooth not 

 very different from that of last premolar. 

 Species examined. — Vampyressa pusilla (Wagner). 



Genus VAMPYRISCUS Thomas. 



1900. Vampyriscus Thomas, Ann. and Mag. Nat. Hist., 7th ser., V, p. 270, 

 March, 1900 (subgenus of Vampyrops). 



Type-species. — Chiroderma bidens Dobson. 

 Geographic distribution. — Peruvian Amazon region. 

 Number of forms. — One, the type species. 



