1916.] NATURAL SCIENCES OF PHILADELPHIA. 67 



March 21. 

 The President, Samuel G. Dixon, M.D., LL.D., in the chair. 



Seventy-eight persons present. 



The death of John Thomson, A.M., a member, February 23, 1916, 

 was announced. 



The Publication Committee reported the reception of papers under 

 the following titles as contributions to the Proceedings: 



" The Germ Layers of Bdellodrilus," by George W. Tannreuther 



(February 23). 



'Some Bees from Australia, Tasmania, and the New Hebrides," 

 by T. D. A. Cockerell (March 6). 



"A New Species of Onchidiopsis from Bering Sea," by William 

 H. Dall (March 16). 



" Evidence of a Saturation Point in Evolution," by Walter Sonne- 

 berg (March 20) 



Dr. Edwin G. Conklin made an illustrated communication on 

 his impressions and experiences during a trip to New Zealand and 

 Australia. 



The following was ordered to be printed: 



