408 THE CANADIAN ENTOMOLOGIST. 



OrtJiotylus chlo?'to?iis, Say. — Several from Red Cedar Lake and 

 Island Lake. 



Flagiognaihus obscurus^ Uhler. — Several large and clearly-marked 

 examples of this common species were taken at the several localities. 



Plagiogiiathtis politiis, Uhler. — Swamp Creek, August 14th, and 

 Island Lake. 



Plagiognathus aimulatiis, Uhler. — A very black little species, of which 

 two examples were taken at Island Lake, August 12th. Kindly 

 determined for me by Mr. Otto Heidemann. 



Ceresa brevicornis, Fitch. — One small male was taken on Fox Island 

 jn Red Cedar Lake. Mr. Palmer kept a close watch for the Membracidte, 

 but this was the only species taken. 



Otiocetus Coquerberti, Kirby. — One pair of this pretty species was 

 taken at Island Lake, August 12th. The elytra are more suffused with 

 yellow than in the specimen from western New York. 



Cixius stigmatus^ Say. — Apparently abundant. In this material 

 there is a conspicuous blackish vitta before the middle of the elytra in 

 the female. The male elytra shows but faint traces of this maculation, 

 but in both sexes there is a fuscous spot on the stigmata, and the nervures 

 are conspicuously dotted. In the eastern States and Canada we have 

 at least three closely-allied species of Cixius^ that I identify as follows : 



a. Vertex triangularly and subacutely produced anteriorly, its apex very 



nearly attaining the base of the front, and almost bisecting the 

 transverse compartment on the apex of the head. Front clypeus 

 and mesonotum black, with the facial carinee pale. Styles of the 



males broad, about equalling the pygofers stigmatiis. 



— . Vertex obtusely rounded before, not nearly attaining the base of the 

 front, transverse compartment much less narrowed at the middle. 

 Styles of the male distinctly shorter than the pygofers b. 



b. Larger, piceous brown, becoming blackish on the front, sides of the 



mesonotum, and on the abdomen. Elytra with very faint brownish 



clouds, or almost transparent, with dotted nervures pini. 



— . Smaller. Black, with the carinse more or less pale ; elytra more 



strongly spotted and dotted on the nervures colospium.. 



Delphax furcata^YxQv.? — One female taken at Island Lake agrees 

 with Provancher's short description and my former determination of this 

 species, except that the front and vertex are black. It may be a large 

 dark form oi pei/ucida, but I believe when the male is placed it will prove 

 distinct. 



