252 



C'lHtogaistev Imraaculata Macq. H.2, Je 8. 111. 



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



Sturmm alb!frons ^Y^\k. {Q>o(im\\e\.t,Ae\^:). H.-2, Au. 19. (2) 111. 



Phormia terrienov(e Desv. (Coquillett, det.). H.2, Au. 18, 19. 



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



A common species of house-fly. 

 Musca rlomesfica Linn. H.2, Au. 18. Xot infrequent at Devil's 



Hole. The common house-fly. 

 Anthomijia pratiiwola Panz. (Coquillett, det.). H.2, Au. 18. No 



other Illinois record. 

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



Illinois record. 

 Rivellia vir'tdulans 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. 



Hymesoptera. 



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



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



Monophadnoides ruhi Harr. H.2, Je. 8 ( larvae). On raspberry by 

 roadside. HI. 



Schizocerus, n. sp. (Ashmead, det.). H.3, Au. 14. Common on 

 undetermined low jdants at edge of blowout, associated with 

 Cfielorius, and closely imitated by it. (See Chelonas texanus, 

 below.) 



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



Cardiorfulas apicalls Cress. (Ashmead, det.). H.2, Au. 18. (5) 111. 



Mlci'odus sanotus 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 Schlzocerus, 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 anrjheri LaMun. iAscof/asU-r) ( Ashmead, det.). H.3, Au. 

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



Exochllum fuscipenne Nort. (Ashmead, det.). H.2, 5; Au. 12, 

 13. (2) 111. 



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



KnicospiluH purtjatas Say. H.l, (i; Au. 22, S. 4. (5) 111. 



