720 DESMODUS. DIPHYLLA. 



Genl. Char. Those of the genus. 



Color. Above dark rufous brown, base of hairs whitish; under 

 parts pale gray or whitish. 



Measurements. Length of head and body, 76.2; forearm, 63.5; 

 third finger, metacarpal, 53.3; fourth finger, metacarpal, 63.5; ear, 

 19; tragus, 7.6; tibia, 38; foot, 15.2. Skull: occipito-nasal length, 

 20; zygomatic width, u; interorbital width, 5.5; mastoid breadth, 

 12.5; height of braincase at bullae, 12; palatal length, 7.5; length of 

 mandible, 14. 



172. Diphylla. 



Diphylla *Spix, Simiar. et Vespert. Bras., 1823, p. 68. (nee Oken 

 Mollusca, 1817.) Type Diphylla ecaudata Spix. 



H&matonycteris H. Allen, Proc. U. S. Nat. Mus., xvm, 1896, p. 

 777. Type, Diphylla ecaudata Dobson. (nee Spix.) 



Muzzle flat, square, not separated inferiorly from lip; raised trans- 

 verse ridge behind muzzle; lower lip indistinctly cleft; auricle with 

 both internal and external basal lobes; tragus abruptly acuminate, 

 thickened near apex ; interfemoral membrane rudimental ; middle pair 

 of upper incisors very large, outer exceedingly minute; lower incisors 

 pectinate, central pair larger than outer; premolars compressed, with 

 knife-like edges, the first on lower jaw twice the size of the second, 

 and the third more than twice the size of first; upper molar minute. 

 Spec, ex Mexico. 



KEY TO THE SPECIES. PAGE 



A. Under parts gray ..................... D. ecaudata (Spix?) 720 



B. Under parts seal brown ...................... D. centralis 721 



676. ecaudata Spix, Simiar. et Vespert. Bras., 1823, p. 68, pi. 

 xxxvi. H. Allen, Proc. U. S. Nat. Mus., xvm, 1896, p. 769. 

 (nee Spix?.) 

 TAILLESS BAT. 



Type locality. Brazil. 

 Geogr. Distr. Southern Mexico ?. Brazil. 

 Genl. Char. Those of the genus. 



Color. Sides of neck and the back fawn color ; shafts of hair nearly 

 white ; under surface gray, base of fur white ; triangular space of gray 



*Spix's specimen in the number of its molars, ^^, may be abnormal; but 



if not, it belongs to a different genus from the species described by Dr. H. 

 Allen, from Mexico. 



