112 THE CANADIAN ENTOMOLOGIST. 



Philcenus lineatiis, L. — I have a large series of this species from the 

 North-eastern U. S., the specimens of which are identical with the typical 

 European form. It seems probable that true lineaius is confined to the 

 Eastern U. S. In American publications three distinct species have been 

 confused under this name, — true lineatus, the bilineatiis of Say, and a 

 new species from New England which I shall call americanus. 



The genus presents two types of elytral venation, one simple and 

 regular, with three or four distinct apical cells, while in the other the 

 elytra are distally irregularly reticulated. Lifieatus, spumarius, campestris, 

 exciamationis, etc., fall into the first group, while the second group 

 appears to be strictly American, including ahjedtis, biliiieatus and 

 americanus. 



Philcenus bilineatus, Say. 



1 83 1. Say, Journ. Acad. Nat. Sci. Phila. VI., 304 (Aphrophora bilineata). 

 1872. Uhler, List Hem. Colo, and N. M., 472 (Ptyelus lineatus). 



1876. Uhler, List Hem. region west of Miss. R., 347 (Philcenus lineatus, 



var. bilineata). 



1877. Uhler, Rep. on Ins. Coll. in 1875, 458 (Philcenus lineatus). 



1878. Uhler, List Hem. Dak., Ind., Mont., 510 (P. lineatus). 

 1895. Coding, Syn. and Cat. N. A. Cercopidre (P. lineatus in part). 

 1895. Gillette & Baker, Prelim. List Hem. Colo., p. 70 (P. lineatus). 



This is the very common western species, heretofore referred to 

 lineatus. Say's colour description is a very good one. It is a larger, more 

 robust species than lineatus, with the elytra broader in proportion to the 

 width. The face is very much more strongly convex as viewed from the 

 side than in lineatus. There are also other minor differences. 



I have specimens of a small male variety from Northern Colorado in 

 which the head and thorax are darker, and the elytra, except the usual 

 costal markings, black. 



Philcenus americanus., n. sp. 



Resembling bilineatus in size and form as viewed from above. It 

 has the flatter face of lineatus, which it resembles very closely in colour. 

 It, however, differs very markedly in the elytral venation, which is very 

 weak and distally broken up into irregular reticulations. The vertex is 

 longer in propoition to length of pronotum than in li?ieatus. Length, 

 6 mm. 



I have before me nine specimens, all very uniform in characters, 

 sent by Prof. A. P. Morse, of Wellesley College, from the following 

 localities : Dover, Mass., June 26 ; Wellesley, Mass., Aug. 8 ; Thompson, 

 Conn., Aug. 4. 



