THE CANADIAN ENTOMOLOGIST 107 



This is a black species, which has been generally confused 

 with the eastern Dolerus sericeus Say, which does not occur so far 

 as my experience goes, upon the Pacific Coast. Konowi is readily 

 differentiated from sericeus by the striations on the scutellar ap- 

 pendage. The difference between this species and sericeus was 

 first pointed out to me several years ago by the late Pastor F. R. 

 W. Konow, the German student of the Tenthredinoidea, for whom 

 it is named. 



Dolerus graenicheri, n. sp. — Female : Body black with the 

 entire prothorax, the median lobe of the mesonotum, beneath the 

 front wings, and the base of the front wings, rufous; the tegulae 

 black; the antennal furrows hardly indicated adjacent to the an- 

 tennae; the vertical furrows short, knife-like cuts; an indefinite 

 furrow from the lateral ocelli to the corner of the compound eyes; 

 no carina on the caudal margin of the head; the punctuation on 

 the postocellar area and the posterior orbits dense and uniform; 

 the scutellar appendage transversely striate; the impunctate area 

 of the lateral lobes of the mesonotum distinct and extending to 

 the median lobes; the scutellum more densely punctured than the 

 median or lateral lobes, the median lobe more densely than the 

 lateral lobes; the saw-guides straight above, convexly rounded 

 below and at the apex to a point above, apex with a dense scopa of 

 long hairs; the wings slightly infuscated, the veins and stigma 

 brownish. Length 7 mm. 



Habitat. — Layton Park, Milwaukee County, Wisconsin. 



This species is named for its collector, Dr. S. Graenicher, who 

 sent it to me. It is related to unicolor, collaris, and lesticus, from 

 the first it differs in the type of punctuation found upon the head, 

 from the second in the extent of the antennal furrows, and from the 

 third in the shape of the saw-guides. 



Astochus, n. gen. — Front wings with the radial cross- vein, the 

 radio-medial cross-vein, the free part of R.4 and Rs all present; 

 the medio-cubital cross-vein joined to R+M a considerable distance 

 before the origin of M ; the free part of Sci faint, located opposite 

 the medio-cubital cross-vein; the free part of the second anal vein 

 short, erect, transverse; the contraction of the third anal vein in- 



