1910.] NATURAL SCIENCES OF PHILADELPHIA. 149 



March 1. 

 Mr. Frank J. Keeley in the Chair. 



Fourteen persons present. 



John H. Harshberger, Ph.D., made a communication on the 

 physiognomy of North American vegetation. (No abstract.) 



March 15. 

 Mr. Charles Morris in the Chair. 



Nineteen persons present. 



The reception of a paper entitled "Spermatogenesis in Lepidoptera," 

 by Margaret Harris Cook, was reported by the Publication Committee. 



Thomas H. Montgomery, Ph.D., made a communication on a 

 study of sexual selection as embodied in his observations on spiders. 

 (No abstract.) 



Thamnophis butleri again in Pennsylvania. — Mr. Henry W. Fowler 

 remarked that on July 3, 1907, he had secured an example of this species 

 at Warren, in Warren County. As it has not before been recorded from 

 this part of the State, this record may prove of interest, though specimens 

 have been secured as far east as Port Allegheny in McKean County, 

 as recorded by Stone, and later by Ruthven. Cope originally obtained 

 Pennsylvanian specimens near Franklin, in Venango County, and 

 described them as Eutamia brachystoma. 



The following was ordered to be printed : 



