1897.] NATURAL SCIENCES OF PHILADELPHIA. 333 



The irregular shape of the tergum, exceptionally convex, occludent 

 and concave, carinal margin, and unusual angulation of the scutal 

 margin are sufficiently unusual features to insure recognition of the 

 species, although the tergum is generally one of the less satisfactory 

 plates for description. The discovery of the carina will be looked 

 for with interest, as the position of the species in the genus cannot 

 be predicated without a knowledge of that valve. 



The species is respectfully dedicated to the Rev. Leander Trow- 

 bridge Chamberlain, D. D., whose liberal and enlightened interest 

 in the "Lea Collection of Eocene Mollusca " must be regarded as 

 one of the important factors in the present revival of the study of 

 American tertiary paleontology. 



A single scutum of Balanus was collected by Mr. Johnson from 

 the Eocene of Black Shoals, Brazos River, Texas. It is somewhat 

 worn, and the species remains doubtful until further remains come 

 to light. 



September 21. 

 The President, Samuel G. Dixon, M. D., in the Chair. 

 Twenty-seven persons present. 



September 28. 

 The President, Samuel G. Dixon, M. D., in the Chair. 



Twenty persons present. 



The death of Johannes Japetus Smith Steenstrup, a Correspon- 

 dent, June 20, 1897, was announced. 



The following were elected members : — 



Thomas H. Conarroe, M. D., G. A. Mueller and Mrs. Catherine 

 Mueller. 



The following was ordered to be printed : — 



