422 On new Forms of Stenodermatous Bats. 



16 Aug., 1895. Collected by Mr. G. D. Child. Presented 

 by Oldfield Thomas, Esq. Brit. Mus. no. 99. 11. 1. 35. 

 Collector's number III. 10. 



Range. — From Central Colombia to N.W. Venezuela. — 

 9 specimens with skulls examined. 



Ardbeus aztecus, sp. n. 



Allied to A. toltecas, Saussure, but in every respect some- 

 what larger ; metacarpals unusually long ; interf'emoral 

 strongly haired. Forearm 45-4(3'8 mm. 



The skull is in every respect slightly larger and more 

 heavily built than in A. toltecus ; the teeth a little larger. 

 The external dimensions greater; in the smallest specimen 

 of A. aztecus available the forearm is 6 mm. longer than in 

 the smallest A. toltecus toltecus, in the largest specimen 

 3"3 mm. longer than in the largest A. toltecus toltecus. The 

 metacarpals unusually lengthened; indices of tliird, fourth, 

 and fifth metacarpals, respectively, 916, 928, and 951, in 

 A. toltecus 912, 898, and 923. 



Type. — ^ ad. (skin). Tetela del Volcan, Morelos, 

 IMexico; 12 Feb., 1893. Collected by Mr. E. W. Nelsmi. 

 U.S. N. M. (Biological Survey collection) no. 52050. 

 Collector's number 4332. 



Range. — As yet only known from the State of Morelos, 

 Mexico. — 4 specimens w'ith skulls examined. 



Artiheus turpis, sp. n. 



A peculiar species. Cranial rostrum unusually depressed 

 and slightly, but distinctly, bent upwards ; alveolar border 

 of maxillary bone, therefore, more abruptly ascending than 

 usual in the genus. Bony palate shortened: in A. toltecus 

 (apparently the nearest relative of A. turpis) the length of tiie 

 nalate, from palation to posterior border of incisive foramina, 

 is greater, in A. turpis less, than the length of the post- 

 ])alatal portion of the skull, from pahition to basion. 

 Molars |. Cusp 7 of m^ large. Length of skull, inion to 

 front of canines, 20; maxillary tooth-row 6"7 ; forearm 40-5; 

 third metacarpal 37 mm. 



Tgpe — ? ad. (ale.). Teapa, Tabasco, S. Mexico. Collected 

 by Mr. 11. H. Smith. Presented by ^lessrs. O. Salvin and 

 F. DuCane GoJman. Brit. Mus. no. 88. 8. 8. 29. 



Ru'ige. — The type is the only S[)ecinien on record. 



