12 PROC. ENT. SOC. WASH., VOL. 20, NO. 1, JAN., 1918 



fPimpla, Epiurus, or Iseropus inquisitor (Say), Authors, in part. 

 Pimpla inquisitoriella Dalla Torre, Cat. Hym., Ill, 1901, p. 435. 

 ? Pimpla, Epiurus, or Iseropus inquisitoriella Authors, in part. 



Iseropus coelebs (Walsh). 



Ichneumon, inquisitor var. a Say, Bost. Journ. Nat. Hist., I, 1835, p. 234. 



Type. Lost. 



Pimpla coelebs Walsh, Trans. Acad. Sci. St. Louis, 111, 1873, p. 141. 

 Type. Destroyed. Neotype in U. S. Nat. Mus. 

 Bassus cylindricus Provancher, Addit. Faun. Ent. Can. Hym., 1889, p. 



111. 



Pimpla, Epiurus, or Iseropus inquisitor (Say), Authors, in part 

 Pimpla, Epiurus, or Iseropus inquisitoriella Authors, in part. 

 Pimpla (Jtoplectis) orgyiae Ashmead, Trans. Am. Ent. Soc., XXIII, 1896, 



p. 213. 

 Pimpla (urus) bruneijrons Viereck, Ent. News, XX, 1909, p. 391. 



THREE HUNDRED AND NINTH MEETING, JANUARY 3, 1918. 



The annual presidential address was given by Prof. Chas. R. 

 Ely, the subject chosen being " Recent Entomological Chemis- 

 try and Some Notes Concerning the Food of Insects." 



RECENT ENTOMOLOGICAL CHEMISTRY AND SOME NOTES 

 CONCERNING THE FOOD OF INSECTS 



BY CHARLES R. ELY 



In treating the subject of this paper it is the intention of the 

 writer to consider only such data as have found their way into 

 chemical literature during the past eleven years. The reason for 

 selecting this period of time is that the discussion is based upon 

 the articles or papers listed in Chemical Abstracts, a journal 

 published by the American Chemical Society, which appeared for 

 the first time in 1907. This Journal covers the chemical litera- 

 ture of the world in an exhaustive manner, as may be seen by the 

 fact that the index to the first ten volumes, which is now in the 

 course of publication, will contain about 6000 pages and about 

 800,000 entries. 



In examining the thousands of pages of abstracts listed to see 

 which ones were of interest from an entomological standpoint, in 

 the broadest sense, and after including everything which could be 

 classified as falling under this head, only a few more than 800 

 titles were found to have been secured. In making up this list, 



