194 THOMAS SAY FOUNDATION 



Santa Cruz Mts. (Mrs. A. E. Bush) ; Mari- 

 posa Grove, 6,150 ft., May 14. 1879; Fresno 

 Flats, 3,500 ft., May 9. 



Washington, Forks, Chatham Co., July 5, 1920 

 (E. C. Van Dyke). 



Oregon, Corvallis, May 29. 



Acroneuria xanthenes Newman. 



(Plate 16, fig. 10; plate 29, figs. 8, 11, 12; plate 30, fig. 2.). 



1828. Perla xanthenes Newman, Ent. Mag., 5:178. 



1841. Perla xanthenes Pictet, Ins. Neur., p. 245. 



1852. Perla xanthenes Walker, Cat., p. 159. 



1861. Perla xanthenes Hagen, Syn. Neur. N. A., p. 26. 



1892. Perla xanthenes Banks, Cat., p. 342. 



1894. Perla xanthenes Banks, Ent. News, 5:178. 



1904. Perla xanthenes Banks, Proc. Ent. Soc. Wash., 6:205. 



1907. Perla xanthenes Banks, Cat., p. 12. 



1907. Perla xanthenes Tucker, Kan. Univ. Sei. Bull., 4:78. 



1908. Perla xanthenes Banks, Proc. Ent. Soc. Wash., 9:150. 



1908. Perla xanthenes Banks, Trans. Anier. Ent. Soc, 34:257. 



1921. Eccoptura xanthenes Klapalek, Bull, de la Soc. Ent. de Belgi- 



que, 61:60. 



1922. Acroneuria xanthenes Needham and Claassen, Can. Ent. 54:252. 



1923. Eccoptura xanthenes Klapalek, Coll. Selys IV, 2:63 (female).* 



1909. Acroneuria brevidicauda Klapalek, Bull. Internat. Acad. Sci. 



Boheme, p. 12. 



Length to wing tip, S , 22-26 mm. ; $ , 29-32 mm. Ex- 

 panse, $ , 38-44 mm. ; 9 , 46-54 mm. 



General color pale yellow. 



Head a little wider than prothorax ; pale yellow ; frontal 

 ridge and lateral tubercles distinct; ocelli form an equi- 

 lateral triangle ; hind ocelli as close to the eyes as to each 

 other; on inner margin of ocelli a black ring. Antennae 

 pale, covered with short hairs ; palpi pale. 



Prothorax uniformly pale yellow, narrower than head, 

 a little wider than long, narrower behind; angles sub- 

 acute; front margin evenly rounded, sides and hind mar- 

 gin somewhat angulate ; surface moderately rugose ; each 

 side with a rather deep depression near the margin, just 

 back of the middle ; legs uniformly pale yellow ; wings 

 pale yellow, nearly hyaline; veins yellow; C, Sc, Rl, and 

 the costal crossveins paler than the other veins. 



Abdomen yellow; cerci or tails yellow, hairy; basal seg- 



•Note : The male specimen (one of Newman's types) on whose secondary sexual 

 characters Klapalek founded his genus Eccoptura, does not belong with the 

 female (also figured by Klapalek as one of Newman's types) : The species 

 represented by the female has been consistently regarded as the .nnitluncs 

 of Newman, has been frequently collected with its corresponding male, and 

 less confusion will ensue if the female type be allowed to stand as the true 

 type of this species. What the male is we do not know. We did not know of 

 its existence when we published our note on .run Hit tics in the Canadian Ento- 

 mologist for 1922, p 252. 



