365 



There have been twenty stated meetmgs of the Society, 

 and eight meetings of the Microscopic Section. The aver- 

 age attendance of the meetings of the general Society has 

 been thirty-fonr members, and of the Microscopic Section, 

 nme members. 



At these meetings, thirty-six communications have been 

 presented, as follows : 



May 17, 18G5. 



Charles A. WnixE, M. D. Observations on the genus 

 Belemnocrimis. 



June 21, 1865. 



Capt. N. E. Atwood. On the habits of the Halibut. 



July 5, 1865. 



A. A. Gould, M. D. The Xudibranchiate Mollusks of New 



England. 



September 20, 1865. 



Prof. J. Wyman. On the formation of Ripple Marks. 

 S. H. ScuDDER. Notes upon some Odonata from the Isle of 

 Pines. 



October A, 1865. 



B. G. Wilder, M. D. On the NepMla plumipes Koch ? its 



habits, and a new method of obtaining its silk. 



S. H. ScuDDER. Notes on some White ISIountain Odonata. 



A. S. Packard, Jr., M. D. Observations on the Dritt Phe- 

 nomena of Labrador and Maine. 



October 18, 1865. 



A. Agassiz. On the Development of tlie Porcellanidre. 



B. G. Wilder, M. D. On an imperforate ear in a Negro. 

 Prof H. J. Clark. The Anatomy and Physiology of the 



Vorticellidan Parasite (Trichodina pediculus Ehr.) of Hy- 

 dra. 



November 1, 1865. 



C. T. Jacksox, M. D. Account of a Journey to California 



and Nevada. 

 H. ]\Iann. On the recent Eruptions of Kilauea and Mauna 

 Loa. 



November 15, 1865. 



Prof H. J. Clark. On the Vestibular Lash of one of the 

 Vorticellidce. 



