1908.] 



DK. KNUD ANDERSEN ON BATS. 313 



-. Molars |. All species small: forearm 36o- 

 46'8 mm. 

 e^. Cusp 7 of m^ less developed. 

 ff^. m.' not reduced in size ; equal to |-f 



of ml A. cinerens, p. 290. 



i^. Averaging smaller : maxillary width of 

 sktiU (across m^) 8-8'6 mm. ; forearm 

 39-42 mm. (Para, through Guiana to 



N.W. Venezuela, inch Trinidad) A. c. cineretts, p. 292. 



J^. Averaging larger : maxillary width of 

 skull 8'o-8-9 mm.; forearm 41-2- 

 44 mm. (Colombia, to N.W. Vene- 

 zuela.) A. c. boffotensis, p. 293, 



7^■*. m^ considerably reduced in size: equal to 

 only about i of m^. Forearm 37"8- 



39"8 mm. (Ecuador, Venezuela.) A. rosenhergi, p. 293. 



f^. Cusp 7 of m' more developed. 



i*. Kostrum not unusuallj^ depressed and not 

 bent upward ; bony palate not short- 

 ened ; distance from palation to hinder 

 border of incisive foramina greater than 

 (or equal to) distance from palation to 

 basion. 

 TcP. Eather smaller : length of skull (to front 

 of c) 19"2-21"2 mm. ; upper teeth 

 (c-m2) 6-7"2 ; forearm 87"5-44 ; third 

 metacarpal 33-40"5. 

 d*^. Upper teeth (c-m"-) 6'5-7'2 mm. 

 a'. Upper side of interfemoral densely 



haired A. ioUectis, p. 296. 



a^. Averaging larger : forearm 39- 

 43'5 mm. Darker colour phas3 

 predominant ; facial stripes and 

 white ear-edgings as a rule want- 

 ing or indistinct, rarely strong. 



(S. America, S. and C. Mexico.). A. t. toltecus, p. 297. 

 }fi. Averaging smaller : forearm 37'o- 

 39'7 mm. Light colour phase 

 predominant ; facial stripes and 

 white ear-edgings as a rule 

 distinct or strong, rarely want- 

 ing. (Ecnador.) J.. *. rauws, p. 300. 



})' . Upper side of interfemoral sparsely 

 haired. Forearm 41"7-44 mm. 



(Guiana, Pernambuco.) A. qiiadrivittahis, p. 302. 



e^. Upper teeth (c-m-) 6 mm. No white 

 ear-edgings. Forearm about 38 mm. 



(Yucatan, Vera Craz.) A. ^hceotis, p. 303. 



P. Rather larger : length of skull (to front 

 of c) 22-22'8 mm., upper teeth (c-m^) 

 7"5-7'6; forearm 45-46'8 ; third meta- 

 carpal 42-45. Interfemoral very short, 

 densely haired. Facial stripes in- 

 distinct or wanting; no white ear- 

 edgings. (S.Mexico.) -4. az^ecMS, p. 306. 



j'"*. Rostrum unusually depressed and slightlj' 

 bent upward ; bonj' palate shortened : 

 distance from palation to hinder border 

 of incisive foramina less than distance 

 from palation to basion. 

 tiv'. Larger : length of skull (to front of c) 

 20 mm. ; upper teeth (c-m^) 6'7 ; fore- 

 arm 40"5 ; third metacarpal 37. (S. 



Mexico.) A. turpis, p. 307' 



w>. Smaller : length of skull 18'2-18'7 mm. ; 

 upper teeth 5"8-6"l ; forearm 36'5-38 ; 

 third metacarpal 32'2-35. (S. and C. 

 Mexico.) A. nanus, p. 308» 



