PROCEEDINGS 



OF THE 



ENTOMOLOGICAL SOCIETY 



OF WASHINGTON 

 VOL. X SEPTEMBER-DECEMBER, 1908 Nos. 3-4 



JUNE 4, 1908. 



The 223d regular meeting was held at the Saengerbund Hall, 

 314 C street, N. W. President Hopkins presided, and there 

 were present Messrs. Ainslie, Barber, Burke, Crawford, Davis, 

 Dyar, Ely, Hall, Heidemann, Hopkins, Howard, Jones, Knab, 

 Marsh, Patten, Ouaintance, Sanders, Sasscer, Schwarz, Ulke, 

 Van Horn, and Webb, members, and Messrs. Shonts, Smyth, 

 and Snodgrass, visitors. 



Doctor Howard presented a paper entitled " Some Notes 

 of Interest, " a in which he discussed, (i) the finding of tick 

 parasites, (2) the introduction of a parasite of the elm leaf- 

 beetle, and (3) an explanation of a fly-paper experiment. Mr. 

 Knab asked if the elm tree is ever killed by the elm leaf-beetle. 

 Doctor Howard replied that in exceptional cases, where a 

 drought followed the defoliation, the trees were killed. 



Mr. Webb exhibited a species of Pogonocherus occurring 

 on Pinus edulis and P. jeffreyi in Arizona, which has since been 

 described by Mr. Chas. Schaeffer as Pogonocherus calif ornicus. 



Doctor Hopkins then read a paper entitled " Another Defi- 

 nition of Species." It provoked spirited discussion on the part 

 of Messrs. Schwarz, Hopkins, Dyar, and Barber. 



After the meeting Mr. Barber exhibited living specimens, 



" The matter embodied in this communication has been published else- 

 where. PUB. COM. 



119 



