524 



U. S. NATIONAL MUSEUM BULLETIN 216 



Ont., June 11, 1914, G. Beaulieu (Ottawa). 9, Ottawa, Out., Har- 

 rington (Washington). 9, on dead Quercus, Aylmer, Que., May 31, 

 1903 (Ottawa), cf, 9, reared from Dicerca divaricata, Laniel, Que., 

 June 2, 1937, P. M. Manley (Ottawa). 9, Pointe-du-lac, Que., Aug. 

 2, 1929, F. Firmin (Washington). 9, Lake Willoughby at 1,200 ft., 

 Vt., June 17 to 29, 1945, C. P. Alexander (Townes). 29, Laurel 

 Lake, near Jacksonville, Vt., May 30, 1936 and June 27, 1935, H. D. 

 Pratt (Townes). 9, June (Washington), <?, no data (Washington). 

 d\ 39, no data (Ottawa). 



This species is known from Ontario, Quebec, Vermont, and New 

 York. 



Figures 246, 247. 



-Localities: 246 (left), Xorides harringtoni; 247 (right), X. 

 californicus. 



19. Xorides (Xorides) californicus (Cresson) 



Xylonomus californicus Cresson, 1878, Proc. Acad. Nat. Sci. Philadelphia, vol. 



1878, p. 380; ? . Type: ? , California (Philadelphia). 

 Xylonomus catomus Davis, 1898, Trans. Amer. Ent. Soc, vol. 24, p. 372; 9 . 



Lectotype: 9, Moscow, Idaho (Philadelphia). 



Front wing of male 9 to 13 mm. long, of female 11 to 16 mm. long; 

 wrinkles on temple near and paralleling hypostomal carina very strong 

 and regular. Structure otherwise as described for X. harringtoni. 



Ground color pale fulvous to blackish brown, the palest ground 

 colors in Arizona specimens and the darkest ground colors on the 

 average in specimens from the northern parts of the range. Head 

 never dark brown, varying from yellowish fulvous to brownish fer- 

 ruginous. Mandible blackish ; flagellum black, in female with a white 

 band covering about three segments; thoracic sutures, especially those 

 around scutellum, usually blackish when the rest of the thorax is 

 mostly fulvous or ferruginous; tarsi, more or less of trochanters and 

 front femur, and most of front tibia pale brown or fulvous even when 



