161 



P "Case-worms {Phryganeidw) were somewhat rarely found, rising to 

 15 per cent, in the Eock Bass, and 12 per cent, in the Minnows of the 

 Hybopsis group, but otherwise averaging from 1 to 6 per cent, in less 

 than half of the species." 



THE HOSTS OF A FEW LARGER ICHNEUMONIDS. 



We had occasion last May, in writing to Mr. Chirence M. Weed con- 

 cerning his recently-published paper, "Biological Notes on Some North 

 American Ichneumonidne" (Psyche, Vol. V, No. 145, May, 1888), to bring 

 together the records from our note- books of the habits of several of the 

 species mentioned by him, in order to supplement his short list. As 

 these facts have not been published we give them below as a matter of 

 record : 



Pimpla notanda Proteoteras sesculana. 



A Leaf roller on Locust (not reared). 



Pimpla aunulipes Carpocapsa pomonella.* 



Phycita nebulo.* 



Papilio ajax. 



Datana ministra. 



Tortrix q'aercifoliana. 



A Leaf-roller on Strawberry (not reared). 



Teras oxycoccana. 



Heterocampa marthesia. 



Gelechia. gallfe-asterella. 



Pimpla conquisitor Aletia xyliua.* 



Clisiocampa americana. 

 Thyridopteryx ephemerseforrais.* 

 Phycita nebulo.* 



Pimpla inquisitor Orgyia leucostigma.* 



Gelechia galhij-solidaginis. 

 Grapholitha olivaceana. 

 Coleophora cinerella. 

 Leaf- roller on Ash (not reared). 

 Trogus obsidianator . . .Papilio asterias. 



Trogus exesorius Papilio ajax. 



Papilio marcellus. 

 Papilio asterias.* 

 Papilio troilus.* 

 Papilio turnus.* 

 Ichneumon rufiventris . Pyrameis cardui.* 

 Pyrameis huntera. 

 Vanessa milberti. 



"* Those records witli au asterisk have been published in our accounts of these species. 



We may further mention that Professor Comstock in 1879 reared P. conquisitor from 

 Phacellura liijalinitalis, and that we have more recently reared P. annuHpes from a 

 Chilo near orysceeUus, wbicli we have reared from twigs of sumach at Washington. 

 10332— No. 5 4 



