BULLETIN No. S, VOL. V. 



TABLE OF CONTENTS. 



ART. XVIIL— On tlie Species of the Genus Bassaris. By J, A. Allen, 

 pp. 331-340. 



ART. XIX,— The American Bembecidse: Tribe Stizini. By W. H. Pat- 

 ton, pp. 341-348. 



ART. XX.— List of a Collection of Aculeate Hymenoptera made by 

 Mr. S. W. Williston in Northwestern Kansas. By W. 

 H. Patton. pp. 349-370. 



ART. XXL— Further Notes on the Ornithology of the Lower Rio 

 Grande of Texas, from Observations made during the 

 Spring of 1^78. By George B. Sennett. Edited, with 

 Annotations, by Dr. Elliott Coues, U. S. A. pp. 

 371-440. 



ART. XXII. — Additional Lists of Elevations. By Henry Gannett, pp. 

 441-470. 



ART. XXIIL— Generic Arrangement of the Bees allied to Melissodes and 

 ' Anthophora. By W. H. Patton. pp. 471-480. 



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

 Gibbs. pp. 481-498. 



ART. XXV.— The Coleoptera of the Alpine Rocky Mountain Regions. — 

 Part II. By John L. LeConte, M. D. pp. 499-520. 



