356 proceedings of the academy of [1897. 



October 5. 

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



Thirty persons present. 



A paper entitled "Volcanic Rocks of Mesozoic Age in Pennsyl- 

 vania," by Edward Goldsmith, was presented for publication. 



October 12. 

 Mr. Charles Morris in the Chair. 

 Nineteen persons present. 



October 19. 

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

 Papers under the following titles were presented for publication : — 



" A Revision of the Genus Synidotea," by James E. Benedict. 



" Reptiles from Sonora, Sinaloa and Jalisco, Mexico, with des- 

 cription of a new species of Sceloporus," by John Van Denburgh. 



"Contributions to the Herpetology of San Paolo, Brazil, I," by 

 Dr. H. Von Jhering. 



" Contributions to a Knowledge of the Hymenoptera of Brazil, 

 No. 3. — Sphegidffi (sens, lat.)," by William J. Fox. 



The death of William B. Bement, a member, was announced. 



October 26. 

 Mr. Arthur Erwin Brown in the Chair. 



Forty-six persons present. 



Papers under the following titles were presented for publication : — 



" Geological Section from Moscow to Siberia and Return," by 

 Dr. Persifor Frazer. 



" Scaphopoda of the San Domingo Tertiary," by H. A. Pilsbry 

 and Benjamin Sharp, M. D. 



Mr. Daniel Baugh was elected a member. 



The following were ordered to be printed : — 



