252 



Cistogaster immaculata Macq. H.2, Je 8. 111. 



Ocyptera carolinm Desv. H.2, 4; Je. 6, 8. (3) 111. 



Sturmia albifrons Walk. (Coquillett, det.). H.2, An. 19. (2) 111. 



Phormia temenovce Desv. (Coquillett, det.). H.2, An. 18, 19. 



(4) Very common on Cassia chamoecrista at Devil's Hole. 



A common species of house-fly. 

 Musca domestlca Linn. H.2, Au. 18. Not infrequent at Devil's 



Hole. The common house-fly. 

 Anthomyia pratineola Panz. (Coquillett, det.). H.2, Au. 18. No 



other Illinois record. 

 Comosia lata Walk. (Coquillett, det.). H.2, Au. 19. No other 



Illinois record. 

 Rivellia viridulans Desv. H.4, Je. 6. (2) 111. 

 Rivellia J+-fasciata Macq. H.2, 6; Je. 9, Au. 19. (3) Common on 



plants along the river shore. 111. 



Hymenoptera. 



Tenthredo vertiealis Say. H.4, Je. 6. 111. (Bolter Coll.). 



Dolerus arvensis Say. H.5, Apr. 14. 111. 



Monophadnoides rubi Harr. H.2, Je. 8 (larv;e). On raspberry by 

 roadside. 111. 



Schisocerus, n. sp. (Ash mead, det.). H.3, Au. 14. Common on 

 undetermined low plants at edge of blowout, associated with 

 Chelonus, and closely imitated by it. (See Chelonus texanus, 

 below.) 



Iphiaulax eurygaster Brulle. H.4, Au. 20. 111. 



Cat'diochiles apicalls Cress. (Ashmead, det.). H.2, Au. 18. (5) 111. 



Microdus sanctus Say (Ashmead, det.). H.4, Je. 6. (2) 111. 



Chelonus texanus Cress. (Ashmead, det.). H.3, Au. 14. Examples 

 of Chelonus were very abundant in association with an unde- 

 scribed Schizoeerus, so closely resembling it when in action 

 that the two were hard to distinguish. Two Chelonus were 

 taken, and proved to be one each of this and the next species. 

 No other Illinois record. 



Chelonus angherl La Mun. ( Ascog aster) (Ashmead, det.). H.3, Au. 

 14. (See the preceding species.) No other Illinois record. 



Exochilum fuseipenne Nort. (Ashmead, det.). H.2, 5; Au. 12, 

 13. (2) 111. 



Nototrachys canadensis Prov. (Ashmead, det.). H.2, Au. 19. 111. 



Enicospilus purgatus Say. H.1,6; Au. 22, S. 4. (5) 111. 



