ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



THE ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XXVIII. 



OCTOBER, 1917. 



No. 8. 



CONTENTS: 



Berrheirn Swarms of Butterflies 

 (Lep.) 339 



Cresson Descriptions of new Genera 

 and Species of the Dipterous Fam- 

 ily Ephydridae IV 340 



Seamans A new Species of Tropidia 

 (Syrphidae) from Montana (Dipt.) 342 



Haseman Sarcophaga haemorrhoida- 

 lis Larvae as Parasites of the Hu- 

 man Intestine ( Dipt.) 343 



Lindsay A List of Butterflies of Iowa 347 



Medal Awarded for Entomological 

 Research 353 



de la Torre Bueno Life History of the 

 Northern Microvelia Microvelia 

 borealis Bueno (Hem., Het.) 354 



Hebard A new Species of Myrmeco- 

 philous Blattid. (Orth. ; Blattidae ; 

 Corydiinae) 360 



Cockerell A Second Colletes with 

 Spotted Wings ( Hym. ) 363 



Ainslie Notes on the Construction of 

 the Cocoon of Praon (Hym., Bra- 

 conidae) 364 



Green A new Trichodes (Cleridae, 

 Coleop. ) 367 



Crosby and Leonard An Egg Para- 

 site of the Sumac Flea Beetle 

 (Hymen., Chalcid.) 368 



Felt Indian Gall Midges (Cecidomy- 

 iidae, Dipt. ) 369 



Editorial The Lack of Entomologists 373 



Westcott Stx Attraction Overcome by 

 Light Stimulation (Lep.. Col.) 374 



Emergency Entomological Service 375 



Entomological Literature 377 



Doings of Societies Ent. Sec., Acad. 



Nat. Sci. Phila. (Lep., Orth.) 382 



Feldman Collecting Social (Lep., 



Col.) 383 



Amer. Ent. Soc. (Odonata) 383 



Butterfly Club Organized in Los An- 

 geles 383 



Obituary Notes Rev. Octavius Pick- 



ard-Cambridge 384 



Mrs. Helen Grier LeConte 384 



Corrections 384 



Swarms of Butterflies (Lep.). 

 By JAMES L. BERNHEIM, Corporal, Band, Third U. S. Infantry. 



(Plate XXIV.) 



On September 4, 1916, and for several days following, near 

 Eagle Pass, Texas, the air was fairly alive with swarms of 

 Libythca bachmani (Snout butterfly), which were flying to- 

 ward the north. They occupied a strip about a mile wide east- 

 ward from the Rio Grande, in which region the vegetation is 

 most abundant. 



They extended upward as far as the eye could reach, and, 

 borne by a mild breeze from the south, were moving quite 

 swiftly. During this time I made several collecting trips south 

 of Eagle Pass and at each step stirred up veritable clouds of 

 this interesting butterfly which immediately rose in the air and 

 started north. There were literally millions of them and many 



339 



