18 CHIROPTERA: 
Geoffroy’s Marmoset, originally described from Panama, seems to be the only species 
found there; for Mr. Sclater believes that the specimens formerly referred by bam to 
M. edipus (Linn.)' were probably of this species®. Several examples have been received 
alive from that State by the Zoological Society; and many specimens have been sent to 
the European museums by Arcé and other collectors. It has not yet been met with 
further north ; but to the southward its range extends some way into Colombia, where 
specimens, presented by Mr. W. Benchley to the Zoological Society, were obtained in 
the forests near the coast‘; but the common Marmoset of that country is certainly 
the Pinche, UW. edipus. | 
The habits of Geoffroy’s Marmoset are probably similar to those of its congeners, but 
no special observations on this point appear to have been recorded. 
Order IT. CHIROPTERA. 
The Chiropterous fauna of Central America is characterized by the enormous pre- 
ponderance of the typically Neotropical family Phyllostomide, which claims nineteen ~ 
out of the twenty-eight genera which will here be recognized; and only one of these 
(Macrotus) extends a short way into the Nearctic Region. Of the Emballonuride, 
which has a similar distribution in the New World, we have five genera, of which 
Nyctinomus alone is found in North America. The cosmopolitan family Vespertilio- 
nide, on the other hand, is poorly represented by four genera; and though miost of the 
species are of northern types, yet several of them also range far to the southward. It 
will be seen, therefore, that the Neotropical character of the Central-American fauna 
is almost as well shown here as in the last order. The range of the species, however, is 
much more extensive, only ten species being peculiar to the subregion, while thirty-two 
extend as far south as Brazil. 
No order of Mammalia, except perhaps the Cetacea, requires such an extensive spe- 
cial knowledge and practical experience in the discrimination of species and weighing 
of affinities as does the Chiroptera. I have therefore had to avail myself very largely 
of the labours of Professor W. Peters and of Mr. G. E. Dobson, who have done so much 
of late years to clear up the confusion in which the order was involved. I have to 
acknowledge valuable assistance from both these gentlemen: my thanks are especially 
due to Mr. Dobson for much kindly criticism; and Professor Peters has not only fur- | 
nished me with a list of the Central-American Bats in the Berlin Museum, but has 
enabled me to figure some of the species which are still unrepresented in our own 
collections. To Professor F. Spencer Baird I am indebted for a full list of the speci- 
mens in the United-States National Museum at Washington. 
