THE CANADIAN ENTOMOLOGIST. 261 



appropriate, in that it adds that of one of our strongest Hemipterists, and 

 at the same time the name of one who has contributed much to our 

 knowledge of the American Derbid;*'. 



Cenchrea Heidemanni, n. sp. — Resembling dorsa/is in form, but 

 larger and lighter coloured : pale orange yellow, with the elytra white. 

 Length, 7.25 mm. 



Vertex broad, slightly angled with the broad, parallel margined front, 

 margins with distinct, slightly serrate carina; pronotum with the lateral 

 margins broad, wing-like, posterior margin deeply, angularly emarginate ', 

 scutellum weakly tricarinate ; elytra long ; venation simple, all three veins 

 with long narrow forks, the apices of the mediastinal not as strongly 

 angled as in dorsa/is, the claval nervure and the basal half of the medi- 

 astinal tuberculate, the posterior half of costal and the whole apical margin 

 finely serrate. 



Colour : pale orange yellow ; elytra milky white, below pale. 



Described from one female from Effingham, Kansas, collected by 

 E. P. Van Duzee. and another from Washington, D. C, from Otto 

 Heidemann. This is only one of the many fine specimens that Mr. 

 Heidemann has turned over to me for study. 



Neither this nor the preceding genus has before been recognized in 

 our fauna. They were both founded on species from St. Vincent Island. 



Cenchrea Uhleri, n. sp. — Size and form of Lamenia Californica 

 nearly, slightly longer and narrower, much smaller than Heidemanni ; 

 pale creamy or slightly testaceous yellow, the elytra margined with 

 fuscous. Length, 5 mm. 



Vertex distinctly longer than in Californica, shorter and broader 

 than in Heidemanni, definitely angled with front ; front widening slightly 

 below to the large clypeus ; elytra long, strictly parallel margined ; male 

 plates long, strap-like, slightly widening towards apex. 



Colour : pale creamy yellow, slightly washed with tawny, the 

 abdominal segments both above and below black, with light margins ; 

 elytra creamy, a round fuscous spot just before the apex of costa, 

 and usually a brownish or fuscous submarginal stripe along the costa, a 

 brownish line along the sutural margin ; the tip of the wing often tawny. 



Described from six specimens from D. C- and Md. (Heidemann), 

 two from Effingham, Kansas (Van Duzee), and three from Onaga, Kansas 

 (Crevecoeur). 



