382 Annals of the Carnegie Museum, 



by him. In these extremely dangerous operations he was associated 

 with Mr. Anthony Tall, though the former explorer was the one who 

 undertook the more hazardous descents necessary to reach the cave 

 entrances, which, in any instance, invariably faced seawards ; so that 

 a person, in order to gain entrance, had to be lowered down by a rope 

 and receive other assistance at the hands of his friends above. 



The material thus collected was sent to the American Museum of 

 Natural History, and some of it was distributed among other Ameri- 

 can and British museums. Originally it was the intention to have 

 the American Museum publish this memoir with its addenda when 

 completed by me ; but, after holding it for many months, so much 

 previously accepted matter preceded it for publication that Mr, Mc- 

 Gall and his associates decided to allow me to place it where it would 

 sooner see the light and the results be given to science. This was 

 not fully decided upon until both of the explorers had visited me at 

 my home in Washington, D. C, and fully discussed the subject, later 

 giving me instructions in writing in regard to my choice of place for 

 publication. 



After this had all been duly arranged. Doctor Lucas kindly turned 

 over to me the added collection of bones that was in his keeping, and 

 it was found to consist of the following lots. This all occurred dur- 

 ing the summer of 1917. In the spring of that year, when this coun- 

 try declared war against Germany, Mr. McGall was commissioned 

 first lieutenant in the United States Coast Artillery, and at this writ- 

 ing (Dec, 30, 1917) he is probably with our troops in France. 



This extensive material has all been carefully compared with the 

 bones described in the main memoir, and the results, in the way of 

 numbers of specimens and their identification, are set forth in the 

 following : 



Table. 



17 crania of Aistrclata vocifcrans. More or less imperfect; show 

 but little individual variation. On the frontal region (supe- 

 riorly) the transverse diameter between inner edges of supra- 

 orbital glandular depressions varies in length from one to three 

 millimeters. Some little variation in size. 



I perfect mandible of ^^. vocifcrans and 8 pieces of others, 



9 ossa quadrata of ^, vocifcrans. 



