186 BULLETIN 5 1, UNITED STATES NATIONAL MUSEUM. 
Characters. — Differs externally from its allies in the much shorter 
leg, proportionally about as long as in the small species of Myotis , 
and in the nearly unmodified ear, the anterior border of which arises 
directly above eye, the posterior border behind base of tragus, so that 
the peculiar funnel-like form characteristic of the other genera is 
scarcely indicated. Skull (fig. 28) differing from that of the allied 
genera in the low braincase and very large rostrum, the length of 
which, as in Chilonatalus , is fully equal to that of braincase, the 
breadth of palate including third molars equal to that above posterior 
roots of zygomata. Maxillaries swollen, but much less than in Pho- 
dotes , not enough to conceal molars when skull is viewed from above. 
Teeth not essentially different from those of Natalus , but canine and 
anterior premolar both above and below 
greatly reduced in size, the canine scarcely 
higher than its corresponding large premolar, 
and the first upper premolar scarcely as large 
as outer incisor. Lower premolars much less 
trenchant than in Nodalus , the shafts almost 
terete, though retaining distinct traces of the 
cutting edges ; pm 2 much reduced in size, 
its height scarcely half that of pm 3 . 
Species examined.— Nyctiellus lepidus 
(Gervais). 
Remarks. — As compared with other mem- 
bers of its subfamily, Nyctiellus is distinctly 
less specialized externally ; but in the peculiar 
form of the skull and in the reduced size of 
the anterior canine and premolar it repre- 
sents a more advanced stage than any of the 
related genera, both of these characters suggesting the members of 
tile next family. 
Family FUKIPTEKID.F. 
Fig. 28.— Nyctiellus lepidus. 
Adult female. Isle of Pines, 
Cuba. No. 103898. x 2 {- ' 
1831. Vespertiliones ( Vespertilionidce ) (part; Vespertilionina, part) Bona- 
parte, Saggio di una distrib. metodica degli Anim. Vert., p. 15. 
1855. [ Vespertilionidce ] “ Vespertilionides ” (part; Emballonurina, part) 
Gervais, Exp§d. du Compte de Castelnau, Zool., Mamm., p. 52. 
1865. Brachyura (part) Peters, Monatsber, k. preuss. Akad. Wissensch., 
Berlin, p. 257. 
1866. Furipterina Gray, Ann. and Mag. Nat. Hist., 3d ser., XVII, p. 91. 
February, 1866. 
1872. Noctilionidce (part; Furiince) Gill, Arrangement of the Families of 
Mammals, p. 18. 
1875. EmdxillQnuridce (part; Emballonurce, part) Dobson, Ann. and Mag. 
Nat. Hist., 4th ser., XVI, p. 349, November, 1875. 
1878. Emballonuridw (part; Furiw ) Dobson, Catal. Chiropt. Brit. Mus., 
p. 354. 
