40) CHIROPTERA. 
2. Vampyrus auritus. 
Vampyrus auritus, Peters, Abh. Ak. Berl. 1856, p. 305, pl. ii. (descr. orig.) ; Tomes, P.Z.S. 
1861, p. 104, pl. xviii.”; Dobson, Cat. Chir. Brit. Mus. p. 471, pl. xxiv. fig. 4°. 
Chrotopterus auritus, Peters, Monatsb. Ak. Berl. 1865, p. 505°. 
Hab. Mexico (Deppe, Mus. Berol.1), Mirador (U.S. Nat. Mus.).—Gutana 1; Braziu 3. 
This very distinct species was first described from Guiana by Dr. Peters 1, who sub- 
sequently made it the type of a distinct genus under the name of Chrotopterus auritus *. 
Mr. Dobson observes that it seems to connect Vampyrus with the genera Lophostoma, 
Tylostoma, and Phyllostoma. “With the species of Lophostoma it agrees closely in 
the form of the skull and in the dental formula, with Tylostoma in the form of the 
incisors and premolars, and with Phyllostoma in the presence of a glandular opening 
near the anterior extremity of the sternum ” °. 
5. SCHIZOSTOMA. 
Schizostoma, Gervais, Expéd. de Castlenau, Mamm. p. 49 (1855). 
The genus Schizostoma differs from Vampyrus in having a distinct external tail about 
half the length of the interfemoral membrane ; the first joint of the middle finger is 
little shorter than half the metacarpal bone ; the ears are united at their base bya low 
cutaneous band; the well-developed nose-leaf is continuous with the upper lip in front; 
and the lower lip has two warts, divided by a median furrow. ~ Several species have 
been described, as S. minutum, Gerv., S. behni, Peters, &c. &c. From these the only 
known Central-American form may be distinguished by the nakedness of the forearm 
and leg, by the second phalanx of the middle finger being slightly longer than the 
first, and by the length of the calcaneum, which exceeds that of the foot. The forearm 
measures about 1:45; and the fur is brown, that of the back being pure white at 
its base. 
1. Schizostoma megalotis. 
Phyllophora megalotis, Gray, Ann. & Mag. Nat. Hist. x. p. 257 (1842, descr. orig.) }; Zool. Voy. 
‘Sulphur,’ p. 17, pl. v. fig. 2°. 
Phyllostoma elongata, Gray, Ann. & Mag. Nat. Hist. x. p. 257 *; Zool. Voy. ‘Sulphur,’ p. 19, pl. viii. 
fig. 2 (nec Geoffroy) *. 
Schizostoma elongatum, Peters, Monatsb. Ak. Berl. 1865, p. 508 (nec Geoffroy)’. 
Mimon megalotis, Gray, P. Z. 8. 1847, p. 14°. 
Micronycteris megalotis, Gray, op. cit. 1866, p. 118”. : 
Schizostoma megalotis, Peters, Monatsb. Ak. Berl. 1866, p. 674°; 1867, p. 469° ; Dobson, Cat. Chir. 
Brit. Mus. p. 478, pl. xxiv. fig. 5”. 
Hab. Muxico, Oaxaca (Sallé, Mus. Brit.', Mus. Berol.’); Guatumata, Duefias (Salvin, 
Mus. Brit.°, Mus. Berol.); Honpuras (Mus. Brit.1°).—Bortvia!°; Braz 2°, 
