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CALIFORNIA ACADEMY OF SCIENCES [Paoc. 4th Ser. 



364. Chrysotus longimanus Loew 



Hood River, VI-1 and VI-5 (Cole) ; Narrows, VII-1. 



365. Campsicnemis claudicans Loew 

 Forest Grove, V-5 to VI-6 and Hood River, IX- 5 (Cole). 



366. Argyra albiventris Loew 

 Forest Grove, V-5 to V-20 (Cole). The species was 

 described from Sitka, Alaska, many years ago and, accord- 

 ing to M. C. Van Duzee, who confirms my determination, 

 has not been recorded since. It differs from robusta John- 

 son in several characters. 



367. Argyra nigripes Loew 

 Hood River, VI-8 and VI-24, two males (Cole). The 

 type was a single male, damaged by mould, which was col- 

 lected at Sitka, Alaska, by Sahlberg, the description, how- 

 ever, is a very good one. The middle tibiae are brownish 

 yellow below, noticeably curved and enlarged near the middle 

 and again near the tip; on the outside of the median enlarge- 

 ment is a cluster of rather long bristles. The few bristles 

 on the underside of the front metatarsi are quite long and 

 very slender. The genitalia are blackish brown and as in 

 other species of the genus posses good specific characters. 



368. Sympycnus pugil Wheeler 

 Hood River, IX-27 to X-ll (Cole). 



369. Nothosympycnus vegetus Wheeler 

 Hood River, V-9 (Cole). M. C. Van Duzee det. 



370. Medeterus viduus Wheeler 

 Hood River, VI-2 (Cole) ; Corvallis. 



371. Hydrophorus innotatus Loew 

 Recorded from Oregon by Aldrich. 



372. Hydrophorus pensus Aldr. 

 Forest Grove, VII-16 to IX-28 (Cole). A common 

 species. 1911, Psyche, XVIII, p. 68. 



