PROCEEDINGS, 1921 17 



individuals appear from the data to have been in hibernation and other 

 indications of teneral condition are lacking. Structurally it may be dis- 

 tinguished by the narrow paranota, relatively broad discoidal area, the 

 very narrow costal area which is scarcely wider than the hypohemie- 

 lytral lamina, and the impunctate vertex, as well as by various minor 

 points. The dorsal aspect is distinctly less convex than in allied species. 

 The macropterous form, if this species has it, is at present unknown. 



Corythucha salicis Osborn and Drake. (^C. canadensis Parshley*). 

 Mission, 21-VIII-'19 (W.D.). Abundant on Salix hookeriana. I have 

 recently called attention to the synonymy of this species-''. It varies in 

 length from 2.65 mm. to 3.57 mm., and the marginal spines are some- 

 times almost vestigial. 



Corythucha salicata Gibson.* Mission, 21, 22-VIII-'19 (W.D.). 

 Downes has taken this species in large numbers on Salix lasiandra, and 

 a few on apple. 



Corythucha hewitti Drake. Can. Ent., LI:159, June-July, 1919. 

 (=C. hesperia Parshley.* Op. cit., p. 23, August, 1919). Vernon, 

 28-IX-'19 (W.D.). Taken on hazel. Determination confirmed by 

 Drake. This species varies considerably in darkness of markings and 

 in the shape of the hood, which, as viewed from the side, may be almost 

 angulate dorsally or evenly rounded. 



Corythucha immaculata Osborn and Drake. (=C. pura Gibson*). 

 Chilcotin, 14-V-'20 (E.R.B.). Taken on Balsamorhiza sagittaria. In 

 my previous paper this species was recorded under Gibson's name. 

 Family REDUVIIDAE 



Ploiariola canadensis Parshley.* This species, described in my pre- 

 vious report, has been found again by Downes in moderate numbers, 

 "in company with P. hirtipes.* The latter was numerous this year on 

 the under side of 9. rail on the shady side of a close board fence which 

 separates my garden from the adjoining lot. Here they were found in 

 all stages living among the cobwebs and apparently getting their living 

 from the insects caught in them, though I never actually found one 

 feeding" (from Downes' notes). With additional material I am enabled 

 to give some further details concerning canadensis. The scutellar spine 

 is not constant in size ; it may be almost obsolete or as long as that of 

 the postscutellum. The third antennal segment is about one-third as 

 long as the second ; the fourth slightly more than one-third the length 

 of the third. 



Pygolampis sericea Stal. Vancouver, 3-V-'03. 



Zelus socius Uhler. Vernon, 20-VI-'19 (E.P.V.). 

 Family NABIDAE 



Nabis subcoleoptratus Kirby. Enderby, 22-VIII-'20 (W.D.). 



Nabis ferus Linne.* Terrace, VI-IX (W.W.H.). 

 Family MIRIDAE 



Trigonotylus ruficornis Fallen. Chilcotin, 27-VII-'20 (E.R.B.). 



'Hem. Notices. I., Ent. News. XXXI :273, 1920. 



