Stearns.] 108 [October 6. 



October 6, 1869. 



The President in the chair. Forty-one members present. 



Professor Spencer F. Baird, of Washington, D. C, was 

 elected an Honorary Member. 



Professor John Capellini, of Bologna, Col. E. B. Carling, 

 IT. S. A., and Mr. T. W. Higginson, of Newport, R. I., were 

 elected Corresponding Members. 



The following gentlemen were elected Resident Members : 

 Messrs. Charles Deane, Ruthven Deane, Edward Rawson 

 and William Brewster, of Cambridge ; Professor Ferdinand 

 Bocher, Dr. G. H. Bixby and Messrs. E. S.-Tobey and P. S. 

 Tobey of Boston. 



The President read by title a paper on the Osteology and 

 Myology of Didelphys virginiana, by Elliott Coues ; with 

 an appendix on the Brain, by Jeffries Wyman ; this will be 

 printed in full in the Memoirs. 



The following papers were also presented : — 



On a New Species of Pedipes from Tampa Bay, Florida. 

 By Robert E. C. Stearns. 



Pedipes naticoides Stearns. Shell resembling a tiny Natica; 

 imperforate, globose, translucent, pale horn color; spire short, apex 

 obtuse ; whorls four to four and a half, slightly flat- 

 tened above; the upper whorls moderately elevated; 

 body whorl nine tenths the length of the shell ; suture 

 strongly defined; surface ornamented with fine de- 

 pressed revolving lines, crossed obliquely and regu- 

 larly by sharply developed lines of growth; aperture 

 longitudinal, suboval ; the middle portion of the outer 

 lip moderately tuberculately thickened within, and slightly pressed 

 inwards, giving a somewhat angular outline to the upper part of 

 its edge; parietal wall covered with shining callus and furnished 

 internally with a strongly developed ridge or plait, which culminates 

 in a prominent sub-acute tooth, projecting in the line of its obliquity 



