86 



mrwximmsis and Carabida?. were found here and there occasionally, 

 as also numerous gnats of no known importance, economically or other- 

 wise. Outside of the Lepidoptera the only insect commonly seen was 

 a chrysopa fly (Ohrysopa o&data), a well-known beneficial species. 

 The temperature at the time of collecting was about 65 c on the streets, 

 but the official reported temperature was 60°. 



The list which follows of the species captured, and the percentage 

 of their occurrence, both on the date of capture and an estimate of their 

 occurrence during the week ending September 23, may be found of 

 interest, not only as showing the value of lights in attracting injurious 

 forms in autumn, but also for comparison with the list of insects cap- 

 tured in a cotton field near Victoria, Tex., October 1, 1897. which was 

 published in Bulletin No. 18 (n. s., pages 85-88). Fully half of the spe- 

 cies listed are Southern, i. e., forms more frequently found in the 

 South than in the Northern States. Anyone who has paid any atten- 

 tion to the species of insects attracted to lights in spring and summer 

 can not haye failed to haye been struck with the fact that beneficial 

 forms are frequently so abundant as to show in many cases that the 

 lights are of practically no yalue whatever in reducing the numbers 

 of destructive insects. Although the noxious forms outnumber the 

 others, it must always be remembered that each individual of a preda- 

 ceous or parasitic species during a lifetime is capable of destroying 

 many individuals of the injurious species. 



The following is the list of captures: 



Latin nanie. 



Common name. ^%T 1^ 



ber 2o. average. 



Pa- cent. Per cent. 



Aletia argillaeea Cotton -worm 26 5 



Heliothis armiger Corn ear worm, boll worm 9 16 



Leueania unipuncta Army worm 6 6 



Laphygma frugiperda Fall army worm 5 3 



Crambus vulvivagellus Vagabond erambns 12 12 



Hypena scabra . ." Green clover worm I 4 3 



Plusia brassiese Cabbage looper 5 8 



Feltia subgothica Dingy cutworm I 9 j 20 



Agrotis ypsilon Black cntworm 1 j 



Protoparce Carolina Tomato worm 1 2 



Protoparce celeus Tobacco worm . 1 



Pyralis costalis Clover hay worm 1 



Thyridopteryx epheoieraeformis Bagworm 1 



Plusia precationis A cabbage looper 1 



Loxostege similalis Garden webworm 2 4 



Prodenia ornithogalli Cotton cutworm 1 5 



Miscellaneous injurious species 6 



Innoxious species of moths " 15 10 



— F. H. C. 



THE ANGOUMOIS GRAIN MOTH IX PENNSYLVANIA. 



It might be remembered b} T some of our correspondents that we 

 made mention of the fact that the Angoumois grain moth {Sitotroga 

 cerealella 01.) is known to occur in the field as far north as Philadel- 

 phia, Pa. From accounts which have reached us this fall (1900), it is 



