Allen Notes on Bahama Bats. 69 



ing up a faint twittering, and finally alighted again in the more distant 

 parts of the cavern. A few retreated through a small crevice which doubt 

 less led into a second chamber. I noticed repeatedly that as the bats alighted 

 they at first clung to the rock with botli hind feet, but after obtaining a 

 secure hold, they let go one foot, and hung suspended by one slender limb 

 only. Of the 56 specimens captured, all were males, a fact which indicates 

 that, as with many species of bats, the sexes segregate when not breeding, 

 and that this was a male colony. After the bats had quieted down, I made 

 as careful an examination as possible, and was unable to discover any 

 other species in the cave save for two male specimens of Phyllonycteris 

 planifrons. Some two weeks later while returning from our cruise among 

 the northern cays, we again stopped in at Israel's Point and I made a sec 

 ond visit to the cave. To my surprise not one of the little Chilonatalus 

 could be found, but instead a colony of from one to two hundred Phyllo- 

 nycteris planifrons was in undisputed possession. The meaning of this I 

 was unable to learn. According to my guide this cave had been discov 

 ered some twenty years or more ago when the ground had been in use as 

 a pineapple plantation. It had always been used by the bats so far as he 

 knew and was visited periodically by the planters in order to procure the 

 guano as well as the cave earth that washes in. 



Our specimens agree precisely with the original description as given by 

 Mr. Miller. Two types of coloration were noticeable, however, due per 

 haps to age, for a number of the specimens, though adult, had not acquired 

 the bright yellowish tint but were nearly drab above with the hairs lighter 

 at their bases. 



Otopterus waterhousii compressus (Eehn). 



Macrotm waterhousii compressus Rehn. Proc. Acad. Nat. Sci., Phila., 1904, 



p. 434. 



The Bahama Otopterus has been recorded from Andros, Long Island, 

 New Providence, and Eleuthera. It has not yet been taken, apparently, 

 among the northern islands of the group. We found but a single colony. 

 This was at Nassau, New Providence, and must have numbered someseventy- 

 five or more individuals. They occupied a portion of the ceiling in one of 

 the underground dungeons cut in the limestone rock at Fort Charlotte. 

 All the adults captured were females, and with these were a number 

 of nearly full grown young of both sexes. In striking contrast to the 

 sleepy brown bats in another chamber of the fort, these bats were alert 

 and active. By the light of a broken lamp we could make out the colony 

 hanging from the ceiling, some of them at least, holding on by one foot 

 only. After once being startled they became very wild and dispersed 

 throughout the chambers of the dungeon, flying from room to room, or 

 back and forth between two chambers as we continued our exploration. 

 Gosse, in writing of the Jamaican Otopterus, calls attention to its sub- 



