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, 
1g; tragus, 7.6; tibia, 38; foot, 15.2. Skull: occipito-nasal length, 
20; zygomatic width, 11; interorbital width, 5.5; mastoid breadth, 
12.5; height of braincase at bullz, 12; palatal length, 7.5; length of 
mandible, 14. 
172. Diphylla. 
=< x 
Waar C=; Pt M104 
Diphylla *Spix, Simiar. et Vespert. Bras., 1823, p. 68. (nec Oken 
Mollusca, 1817.) Type Diphylla ecaudata Spix. 
Hematonycteris H. Allen, Proc. U. S. Nat. Mus., xvii, 1896, p. 
777. Type, Diphylla ecaudata Dobson. (nec 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. acts 
bx Under partsiaray cock? 445 ane eae ecie D. ecaudata (Spix?) 720 
B.« ‘Under parts seal browtis<:2 2.6. ee eeteree D. centralts 721 
676. ecaudata Spix, Simiar. et Vespert. Bras., 1823, p. 68, pl. 
xxxvi. H. Allen, Proc. U. S. Nat. Mus., xvii, 1896, p. 769. 
(nec 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 
Br. 
+ may be abnormal; but 
*Spix’s specimen in the number of its molars, 
if not, it belongs to a different genus from the species described by Dr. H. 
Allen, from Mexico. 
