190 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 
Genus AMORPHOCHILUS Peters. 
1877. Amorphochilus Peters, Monatsber. k. preuss. AkacL Wissensch., 
Berlin, p. 185. 
1878. Amorphochilus Dobson, Catal. Chiropt. Brit. Mus., p. 357. 
Type- species. — Amorphochilus schnablii Peters. 
Geographic distribution. — Tumbez, on the Gulf of Guayaquil, Peru. 
Number of forms. — The type species. 
Characters. — Like Furipterus , but height of braincase, including 
audital bullae, fully equal to distance from frontal angle to most pos- 
terior point of occiput; palatal emargination not extending halfway 
from hamulars to posterior molars; nostrils opening forward at 
extremity of a conspicuous, snoutlike elevation ; chin with a triangu- 
lar, downward-turned flap, margined at each side with a small 
roundish wart ; lower lip thickened at angle of mouth and with large 
warty protuberance slightly in front of middle ; no angular elevation 
on upper lip at point where this occurs in Furipterus. 
Species examined . — This genus is still known from Peters’s de- 
scription and figures only. 
Family THYKOPTERID2E. 
1831. Vespertiliones (V espertilioniclce) (part; Noctilionina, part) Bona- 
parte, Saggio di una distrib. metodica degli Anim. Vert., p. 14. 
1838. Vespertilionidce (part; Noctilionina, part) Gray, Mag. Zool. and Bot., 
II, p. 498, December, 1838. 
1840. Gymnorhina (part; Gymnura, part) Wagner, Schreber’s Saugthiere, 
Supplements, I, p. 466. 
1842. V octilioninece (part) Lesson, Nouveau Tableau du Regne Animal, 
Mamm., p. 16. 
1855. [Vespertilionidce'] “ Vespertilionides ” (part; Molossina, paS) Gervais, 
Exped. du Comte de Castelnau, Zool., Mamm., p. 55. 
1856. Vespertilionidce (part) Tomes, Proc. Zool. Soc. London, p. 172. 
1865. Vespertiliones (part) Peters, Monatsber. k. preuss. Akad. Wissensch., 
Berlin, p. 258. 
1866. Vespertilionidce (part; Natalina, part) Gray, Ann. and Mag. Nat. 
Hist., 3d ser., XVII, p. 90, February, 1866. 
1870. Vespertiliones (part; Vespertiliones, part) Fitzinger, Sitz.-Ber. k. 
Akad. Wissensch., Wien, Math. Naturwissensch., Classe LXII, Abth. I, 
p. 66. 
1875. Vespertilionidce (part; Miniopteri, part) Dobson, Ann. and Mag. Nat. 
Hist., 4th ser., XVI, p. 349, November, 1875. 
1878. Vespertilionidce^ (part; Miniopteri, part) Dobson, Catal. Chiropt. Brit. 
Mus., p. 170. 
1886. Vespertilionidce (part; Miniopteri, part) Gill, Standard Natural His- 
tory, V, p. 166. 
1891. Vespertilionidce' (part; Tliyropterine division) Flower and Lydekker, 
Mammals, living and extinct, p. 660. 
1892. Vespertilionidce (part; Natalini, part) Winge, Jordfundne og nulevende 
Flagermus (Chiroptera) fra Lagoa Santa, Minas Geraes, Brasilien, p. 24. 
1899. Natalidce (part) Miller, Bull. Amer. Mus. Nat. Hist., XIII, p, 245, 
December 23, 1899, 
