1913.] NATURAL SCIENCES OF PHILADELPHIA. 219 



May 6. 

 Mr. Charles Morris in the Chair. 



Thirty-nine persons present. 



The reception of papers under the following titles was reported 

 by the Publication Committee : 



"The antenodal reticulation of the wings of Agrionine Dragon- 

 flies," by Herbert Campion (April 18). 



"The fossil Odonate Phenacolestes, with a discussion of the 

 venation of the Legion Podagrion Selys," by Philip P. Calvert 

 (April 18). ■ 



"A contribution to a knowledge of the Orthoptera of Argentina," 

 by James A. G. Rehn (April 19). 



The issue of the Index to the Publications of the Academy from 

 1817 to 1910, inclusive, was reported. 



Miss H. New^ell Wardle made an illustrated communication 

 on the miniature temples and temple pyramids of the ancient Mexi- 

 cans. (No abstract.) 



May 20. 

 Mr. Charles Morris in the Chair. 



Three hundred persons present. 



The death of the Rev. Leander T. Chamberlain, a member, INIay 16, 

 1913, was announced. 



The Publication Committee reported the reception of a paper 

 entitled "The Helicidae of Lower California," by Henry A. Pilsbry 

 (May 22). 



Dr. William E. Hughes made a finely illustrated communication 

 on a winter exploration of Bolivia and Peru, with special regard to 

 the Inca ruins. (No abstract.) 



The following were ordered to be printed : 



