THE LOW ENTRANCE TO THE BAT CAVE ON THE CHILIBRILLO RIVER OPENS INTO A 

 SERIES OE LONG CORRIDORS AND CHAMBERS MORE OR LESS INTERCOMMUNICATING 



FLASHLIGHT OE A SMALL CLUSTER OF BATS BEFORE THEY WERE ALARMED 



Clusters are ordinarily formed of a great number of individuals, probably several hun- 

 dred in some instances. The variety shown is one of the largest of South American bats, 

 one specimen secured having a wing expanse of 26 inches. The bats are strong and muscular 

 and always ready to bite. The masses of bats bear a close resemblance in form to the 

 stalactites with which the walls and domed ceilings are covered. 



184 



