512 PROCEEDINGS OF THE ACADEMY OF [AugUSt, 



variation in size at the type localit}^ wliicli is farther north than 

 P. roemeri has been found. The average diameter of fourteen adult 

 shells is 17.2 mm. 



July 22. 

 Mr. Arthur Erwin Brown, Vice-President, in the Chair. 

 Six persons present. 



August 19. 

 Mr. Arthur Erwin Brown, Vice-President, in the Chair. 

 Seven persons present. 



Papers under the following titles were presented for publication : 



" On Some Living and Fossil Snails of the Genus Physa found 

 at Las Vegas, N. M.," by Ada Springer. 



"Additions to the Japanese Land Snail Fauna — VII," by 

 Henry A. Pilsbry. 



" Descriptions of the Lycosidre and Oxyopidse of Philadelphia 

 and its Vicinity," by Thomas H. Montgomery, Jr. 



" The Development of Gonionema Murbachii," by Henry Farn- 

 ham Perkins. 



The deaths of Dr. James G. Cooper and of Mr. Edward B. 

 Edwards, members, were announced. 



The following were ordered to be printed : 



