212 CALIFORNIA ACADEMY OF SCIENCES [P*oc. 4th Sejl 



65. Cricotopus slossonae Mall. 

 Forest Grove, VI-3 (Cole). At light. 1915, Bui. 111. St. 

 Lab. Nat. Hist. X, p. 506. 



66. Cricotopus trifasciatus Panz. 

 Forest Grove, VI-3 (Cole). At light. 



67. Camptocladius byssinus Schrank 



Very common at Forest Grove in early spring, often seen 

 in swarms in sunny afternoons; III-3 to IV-5 (Cole). 



68. Orthocladius 4 obumbratus Johann. 



Forest Grove, 111-28 and VI-3 (Cole); Hillsboro, IV-1 

 (Cole). 1905, N. Y. State Museum, Bull. 86, p. 281. 



69. Orthocladius nivoriundus Fitch 

 Forest Grove, 111-28 and Hillsboro, IV-1 (Cole). 



70. Orthocladius sordidellus Zett 

 Forest Grove, VI-3 (Cole). At light. 



71. Diamesa chorea Lundb. 

 Forest Grove, VI-3 (Cole). At light. 



72. Paraclunio alaskensis (Coq.) 

 Several specimens of this curious chironomid were taken at 

 Seaside Beach by L. G. Gentner, VIII-1 5-1914. Aldrich 

 lists the species from Newport in his Catalogue. 



73. Tanypus dyari Coq. 

 Forest Grove. III-4 (Cole). 



74. Tanypus flavifrons Johann. 

 Forest Grove, V- 14 (Cole); Hillsboro IV-1 (Cole). 

 1905, N. Y. State Museum Bull. 86, p. 150. 



75. Tanypus monilis (Linn.) 

 Forest Grove, 111-26 to VI-3 (Cole). 



^Species of this genus were common in the spring and early summer at 

 Forest Grove and several of those collected are apparently undescribed. 



