152 [March, 1S42. 



STATED MEETING, March 1, 1842. 

 Vice President Morton in the Chair. 



DONATIONS TO MUSEUM. 



Casts of three species of Ammonites: viz. A. abyssinus, A. 

 Nicolletii, and A. Mandanensis. Presented by S. G. Mor- 

 ton, M. D. 



DONATIONS TO LIBRARY. 



Bulletin de la Societe Imperiale des Naturalistes du Moscou. 

 Nos. 6. 7 and 8. 1S37. From the Society. 



Annates des Mines. Livs. I. II. and III. Tome^IX. In ex- 

 change. 



Promenade au Mont Dore, &c. Par M. Neree Boube, Pro- 

 fesseur a Paris. From the Author. 



Report of the commissioners for the exploration and survey 

 of the boundary line between Maine and New Hampshire, 

 and the adjoining British Provinces; by Major J. D. Graham, 

 U. S. Topographical Engineer. From Col. J. J. Abert. 



Written Communications. The chairman presented a 

 communication from J. J. Audubon, Esq. and J. Bachmanj 

 D. D., containing descriptions of several new species of North 

 American quadrupeds, of the genera Vespertilio, Mus, Sorex, 

 Seiurns and Spermophalus; which was referred to the com- 

 mittee on previous communications of these gentlemen. 



A paper from Mr. S S. Haldeman was read by Mr. Phil- 

 lips, entitled " A description of a new species of Cyclops, and 

 two new species of Tubifex :" and another from the same 

 author, containing additional remarks on changes of nomen- 



