Entomology of the Illinois Ri/ver. 271 



^'hich species fuller details are given. A hydrocampid 

 parasite, and in all probability parasitic upon the above 



Hydrocampa. 



CremastvLS hartii Ashm., n. s. [Fig. 13.] 



Both sexes were taken upon the surface of Quiver Lake 

 Sept. 14, at Stations A and B. Its host is unknown. 



Described by Mr. Ashmead on page 277. 



Family BRACONID^. 



Clinocentrua niger Ashm., n. s. [Fig. 14.] 



In September Lemna trisulca and other Leranacese were 

 everywhere abundant, often covering the water in a 

 continuous sheet along the shores. Several forms ap- 

 peared to find a natural hal)itat upon the surface, 

 among them the present species, which oftey occurred 

 in considerable numbers. As this genus is generally 

 parasitic upon larvae of L^^pidoptera, and none of these 

 were observed where the Cli/iocentrus occurred, I am at 

 a loss to account for its presence there, unless it was Id 

 search of food. 



Mr, Ashmead's description follows on page 276. 



Family CHALCIDID.E. 



Smicra microgaster Say. 



Adult taken July 6 from puparium of x^Jontomyia 

 •vertebrata. Collected July 10 and 15 and Aug. 20, in 



the first instance apparently feeding on Odontomyia 

 •eggs. (See treatment under Stratiomyiidae.) 



Smicra rufofemorata Cress. 



Bred July 5 from cage containing puparia of Odonto- 

 myia cincta ajid Stratiomyia norm/i. (See Stratiomyiidae.) 



Family PROCTOTRYPID^. 



Loxotropa ruficornis Ashm. 



One male taken Sept. 10 while collecting with dip-net 

 along river margin. • 



