194 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 
Remarks. — The members of the family Mvzopodidae may be at once 
recognized by the sessile adhesive disks on sole and thumb, and the 
large ear with its tragus adnate to the conch, and its meatus partly 
closed by the unique mushroom-shaped process. The skeleton is, as 
pointed out by Thomas, remarkable for its lack of special modifica- 
tions. In general structure, however, especially in the form of the 
humerus and shoulder joint, it unquestionably agrees closely with the 
Natalidae and Thyropteridae, and I fully agree with Mr. Thomas that 
this resemblance indicates an actual relationship between the three 
groups. 
Principal subdivisions. — As at present known, the family consists 
of the single genus Myzopoda. 
Genus MYZOPODA Milne Edwards and Grandidier. 
1878. Myzopoda Milne Edwards and Grandidier, Bull. Soc. Philomath., 
Paris, 7th ser., II, p. 220. 
1878. Myxopoda Dobson, Proc. Zool. Soc. London, p. 871. 
1904. Myzopoda Thomas, Proc. Zool. Soc. London, II, p. 2, pi. i, October 1, ' 
1904. 
Type-species. — Myzopoda aurita Milne-Edwards and Grandidier. 
Geographic distribution. — Madagascar. 
Number of forms. — Only the type species is known. 
Characters . — Dental formula: * 
-2 3 . 1.-234567 ^ 2-2 „ 1 - 1 _ 3 - 3 
1 2 3 . 1 . - 2 3 4 5 6 7 * 3 - 3 ’'' 1 l ,pm 3 - 3 ’ 
m 
3-3 
3-3 
= 38 . 
Upper incisors small, simple, with slightly developed cingula, the 
inner tooth distinctly smaller than outer, which is separated from 
canine by a narrow space ; axis of both pairs in same line ; canines 
simple, without secondary cusps or specially developed cingula ; pre- 
molars both above and below essentially as in Myotis , pm 2 and 
pm 3 about equal to upper incisors in size, each separated by narrow 
spaces from the neighboring teeth ; molars strictly normal, m 3 with 
well-developed metacone and third commissure, m 1 and m 2 without 
hypocone. Skull short, broad, and rounded, its general outline when 
viewed from above strongly suggesting that of Noctilio. General 
structure of anterior portion of palate about as in Natalus , the lateral 
foramina well developed and about as large as median emargination, 
the width of which is approximately equal to length of a pair of 
incisors. Pterygoids rather strongly divergent, the hamular pro- 
cesses unusually long. Basisphenoid pits well developed, circular in 
outline, narrowed superficially, separated by a flat median space the 
width of which is equal to about half surface diameter of pit. Audi- 
tal bullae and cochleae rather large, but not peculiar in structure, the 
bullae covering slightly more than half surface of cochleae, its inner 
border not emarginate. Lips wide, the upper extending beyond 
lower, and somewhat obliquely truncate in front; ear much longer 
