2 



PROCEEDINGS OF THE ACADEMY OF 



Ethnology. 

 J.'Aitken Meigs, S. S. Haldeman, T. Gr. Morton. 



Comparative Anatomy and General Zoology. 

 Joseph Leidy, Jas. M. Corse, W. H. Gobrecht. 



Mammalogy. 

 Geo. A. M'Call, Wm. Camac. 



Ornithology . 

 Geo. A. M'Call, S. W. Woodhouse. 



HerpetoJogy and Ichthyology . 



R. Bridges, J. C. Morris. 



Conchology. 

 T. B. Wilson, W. G. Binney. 



Entomology and Crustacea. 

 John A. Guex, F. Scliaf hirt. 



Botany. 

 S. S. Garrigues, 

 Geology. 

 Chas. E. Smith, 



Mineralogy. 

 S/Ashmead, 



Palaeontology. 

 Joseph Leidy, 



Physics. 

 Fairman Rogers, 

 Library. 

 R. Pearsall, 



Proceedings. 

 Joseph Leidy, 



John LeConte, 

 John Cassin, 

 Edw. Hallowell; 

 T. A. Conrad, 

 R. Bridges, 

 E. Durand, 

 Isaac Lea, 

 W. S. Vaux, 

 T. B. Wilson. 

 B. H. Rand, 

 W. S. V^ux, 

 J. Aitkin Meigs, 



A. J. Brasier. 

 John L. LeConte. 

 F. A. Genth. 

 T. A. Conrad. 

 W. M. Uhler. 

 Joseph Jeanes. 

 Geo. A. M'Call. 



The following papers, on report of the Committees to which they had 

 been referred, were ordered to be published in the Proceedings. 



Catalogue of the species of BEMBIDITIM found in the United States and 

 contiguous Northern Kegions. 



BY JOHN L. LECONTE, M. D. 



On revising recently my collection of the species of the genus named above, 

 I regretted to find, that in former years I had been led to describe as distinct 

 species, many which a more practiced eye now leads me to consider as varieties. 

 The number, also, of well-defined species, being very great, I have thought it 

 important to attempt to separate them into definite groups, which, by contain- 

 ing a comparatively small number of species, would facilitate the subsequent 

 labors of the student endeavoring to identify his specimens. 



[Jan. 



