CHAPTER VIII 
ZOOLOGICAL NOTES, ANTIGUA 
VERTEBRATES, CRUSTACEA, MOLLUSCA, AND ECHINODERMS 
The work of the expedition was devoted almost entirely to 
marine forms and insects, practically no real effort being made 
to study land vertebrates. Incidentally, however, a few mam- 
mals came under our observation, and perhaps the most inter- 
esting of these were the bats. 
Under the roof of one of the large buildings in the dockyard, 
known as the ‘‘Capstan House,’’ there was a roosting place for 
thousands of bats belonging to the family of Phyllostomide. 
They issued forth in a regular swarm shortly before dusk, and 
it is doubtless due to their activity that so few mosquitoes were 
found here. They apparently belong to the genus Phyllostomus, 
as defined by Miller in his ‘‘Families and Genera of Bats,’’ 
1907, p. 122; the dental formula being i. 2 , ¢, a5 Dp. a an: : 
the last molar being minute. The nose-leaf is strictly tri- 
angular, with deep grooves dividing the central horn from the 
lateral lobes. The ears are not very large for this family and © 
are not united by the membranes extending over the top of the 
head. The tail is absent and the interfemoral membrane has an 
obtuse point just above each heel. The color is grayish brown 
above. Quite a large series of specimens was secured, many 
of them being gravid females and yielding abundant material 
for future study of the development of this species. 
Another species was secured on the visit to ‘‘Bat Cave’’ al- 
ready referred to. This also belongs to the family Phyllosto- 
mide, but has no true nose-leaf. The head is much stouter than 
in the preceding species and the nose is truncated like that of a 
pig, which indeed it resembles in miniature. The dental form- 
ula isi. 3 Lees i BPAY g es : , exactly that of a man, by the 
way. The molars are peculiar in having very broad flat crowns 
rising into a conspicuous sharp cutting ridge on the outer side; ~ 
canines with a large postero-lateral cusp. The first upper pre- 
molar is minute and laterally displaced so as to be on the out- 
: (174) 
