108 THE CANADIAN ENTOMOLOGIST 



dicated by an elongate thickening; hind wings with the free part 

 of R4 present and the transverse part of M2 wanting; antennae 

 with nine segments; the clypeus truncate; the compound eyes with 

 their inner margins parallel and distant, the basal plates divided- 

 Type, A stochus fletcheri, n. sp. 



The broad space between the compound eyes, the margined 

 antennal sockets, the divided basal plates, and the truncate 

 clypeus places this genus near Bivena MacG. 



The two species described herewith can be differentiated as 

 follows : 



Postocellar area longer than broad fletcheri 



Postocellar area broader than long aldrichi 



Astochus fletcheri, n. sp. — Female: Body black with the 

 antennae somewhat infuscated, the legs below the trochanters, the 

 abdomen beyond the basal plates, and the wings at base, rufous; 

 the following parts: the clypeus, the labrum, a short, narrow line 

 on the inner orbits, the margin of the pronotum, the tegulae, a 

 round spot on the mesopleura, two spots above the posterior coxae, 

 the underside of the front and middle coxae, the underside and the 

 lateral aspect of the hind coxae, and the stigma, yellowish-white; 

 the third segment of the antennae longer than the fourth ; the 

 labrum broadly rounded; the ocellar basin an elevated, flat, shield- 

 shaped space; the frontal furrow short, broad, and deep, with the 

 lateral walls high; the postocellar area longer than broad with a 

 median furrow, deeper behind; the head and thorax polished; the 

 wings infuscated behind the stigma; the saw-guides convex above 

 and below, the sides gradually converging, squarely truncated at 

 apex. Length, 10 mm. 



Habitat. — Kaslo, British Columbia. 



This insect was collected by the late Dr. James Fletcher on 

 the 28th of May, 1906, and by him sent to Dr. J. Chester Bradley 

 for identification and by Dr. Bradley given to me. It is fitting 

 that it should bear Dr. Fletcher's name. 



(To be continued.) 



