198 proceedings of the academy of 



July 11. 

 The President, Dr. Rusciienberger, in the chair. 

 Sixteen members present. 

 The following paper was presented for publication: — 



" Conti'ibntions to the Ilerpetology of Tropical America. No. 

 9." By Edw. D. Cope. 



The publication of pp. 89 to 120 of the Proceedings for 18U was 

 announced. 



The death of Wm. P. Turnbull was announced. 



July 18. 

 The President, Dr. Ruschenberger, in the chair. 

 Thirteen members present. 

 The following paper was presented for publication : — 



"Descriptions of five new species of Crustacea from Mexico." 

 By T. Hale Streets. 



The publication of pp. 121 to 136 of the Proceedings for 18tl 

 was announced. 



August 1. 



The President, Dr. Ruschenberger, in the chair. 

 Thirteen members present. 

 The following paper was presented for publication : — 



"Descriptions of New Species of Birds of the Families Troglo- 

 dytidse and Tyrannidse^ By Geo. N. Lawrence. 



The publication of pp. 137 to 152 of the Proceedings for 1811 

 was announced. 



Remarks on Blastodon^ etc. of California. — Prof. Leidy stated 

 that he had recently corresponded with Dr. Lorenzo G. Yates, of 

 Centerville, Alameda Co., California, who had discovered the 

 Mastodon remains to which he had called the attention of the 

 meeting on Sept. Gth, 1810. Dr. Yates writes that in his travels 

 through various portions of California, he had made special search 

 for remains of Mastodon and Elephant. He has noted twenty 



[October 24, 



