LIST OF PAPERS 



COCKERELL (T. D. A.) 



Neotropical Bees, principally collected by Professor 



Bruner in Argentina ...... 25 



(Issued March 30, 1918.) 



Cresson (E. T., Jr.) 



Costa Rican Diptera, collected by Philip P. Calvert, 

 Ph.D., 1909-1910. Paper 3.— A Report on the 



Ephydridae 39 



(Issued April 4, 1918.) 



DiETz (William G.) 



A Revision of the North American Species of the 

 Tipulid Genus Pachyrhina Alacquart, with Descrip- 

 tions of New Species (Diptera) . .105 



(Issued June 10, 1918.) 



Gibson (Edmund H.) 



The Genus Corythucha Stal (Tingidae; Heteroptera) 69 

 (Issued April 4, 1918.) 



Greene (George M.) 



A Rare Coleoptera Paper of T. W. Harris . . 251 



(Issued September 30, 1918.) 



Hebard (Morgan) 



New Genera and Species of Melanopli found within 



the United States (Orthoptera; Acrididae) . 141 



(Issued June 17, 1918.) 



See Rehn and Hebard. 



Malloch (J. R.) 



Diptera from the Southwestern United States. Paper 



IV. Anthomyiidae ..... 263 



(Issued October 28, 1918.) 



Marchand (Werner) 



The Evolution of the Abdominal Pattern in Tabani- 



dae (Diptera) . . . . . .171 



(Issued June 17, 1918.) 



Rehn (James A. G.) 



On Dermaptera and Orthoptera from Southeastern 



Brazil 181 



(Issued June 17, 1918.) 



