VI CONTENTS. 



V BULLETIN 1^0. 3.— November 30, 1879. 



. Page. 



XVIII, — On tlie Species of tlie Genus Bassaris. By J. A. Allen .^. 331 



XIX.— The American Bembecidse : Tribe Stizini. By W. H. Patton . .j^ 341 



XX.— List of a Collection of Aculeate Hymenoptera made by Mr. sTw. Wil- 



liston in Northwestern Kansas. By W. H. Patton d49 



XXI. — Further Notes on the Ornithology of the Lower Rio Grande of Texas, 

 from Observations made during the Spring of 1878. By George B. 

 Sennett. Edited, with annotations, by Dr. Elliott Coues, U. S. A.. 371 



XXII. — Additional vLists of Elevations. By Henry Gannett 441 



XXIII. — Generic An-angement of the Bees allied to Melissodes and Anthophora. 



By W. H. Patton 471 



XXIV. — Annotated List of the Birds of Michigan. By Dr. Morris Gibbs 481 



XXV.— The Coleoptera of the Alpine Eocky Mountain Regions. — Part II. By 



JohnL. LeConte, M. D 499 



BULLETI:N' No. 4:.— September 30, 1880. 



XXVI. — Third Instalment of American Ornithological Bibliography. By Dr. 



Elliott Coues, U. S. A 521 



