36 CHIROPTERA. 
Hab. Muxico, Mirador (U.S. Nat. Mus.); Guatemaa, Duefias, Ciudad Vieja (Salvin, 
Mus. Brit.2 & Mus. Berol.) ; Costa Rica (Rogers, Mus. Brit.).—CoLomBia* ; BraziL’. 
Professor’ Peters observes that rudiginosa is not a very happy name for this Bat, 
which is very variable in colour, ranging through all shades from ferruginous to blackish- 
brown. Hitherto it has only been recorded from Brazil, Colombia, Costa Rica, and 
Guatemala; but a specimen from Mirador, in Mexico, is mentioned in the list of Bats 
in the National Museum at Washington to which I have already alluded (p. 18). 
8. Chilonycteris davyi. 
Pteronotus davyi, Gray, Mag. Zool. & Bot. ii. p. 500 (1838, descr. orig.)’; Zool. Voy. ‘Sulphur,’ 
p. 24°; Peters, Monatsb. Ak. Berl. 1872, p. 361’. 
Chilonycteris gymnonotus (Natterer), Wagner, Arch. f. Naturg. ix. 1, p. 867 (18438, descr. orig.)’. 
Chilonycteris davyi, Dobson, Cat. Chir. Brit. Mus. p- 453, pl. xxiii. fig. 4°. 
Hab. Mexico (Mus. Berol.; Liebmann, Mus. Hafin.).—VENEZUELA® ; TRINIDAD; Braziu‘4. 
As already observed, Davy’s Bat was generically separated by its original describer 
on account of the peculiarity of the attachment of the wing-membrane; but in all 
other characters it is hardly distinguishable from the last species. First named by 
Gray. from a Trinidad example, it was independently described by Wagner, under 
Natterer’s MS. name of Chilonycteris gymnonotus, from Brazilian specimens. Ac- 
cording to Professor Peters it occurs as far north as Mexico, whence a specimen has — 
been received by the Berlin Museum; and one collected by the late Professor Liebmann 
in the same country is preserved in the Copenhagen Museum. 
2. MORMOPS. 
Mormops, Leach, Trans. Linn. Soc. xiii. p. 76 (1822). 
This genus is nearly allied to the last; but the cutaneous appendages of the face 
are exaggerated to an extraordinary extent, so that the aspect of the two known species 
is more wonderfully grotesque than that of any other known Bat, or is rivalled by that 
of Centurio alone. ‘The inner edges of the rounded emarginate ears are connected by 
cutaneous bands with the top of the muzzle; there the bands meet and simulate a 
small nose-leaf, while the lips and throat are adorned with lappet-like appendages, 
which surround the free-edged warty chin-leaf and are continuous with the outer edges 
of the ears. The skull, also, is very peculiar in form, the frontal region rising almost 
at a right angle from the facial portion, so that the height of the cranium almost 
equals its length. 
The Mormops which occurs in Central America was formerly confounded with the 
