306 U. S. NATIONAL MUSEUM BULLETIN 216 paht s 



Clara Valley, Santa Kosa Island, Sliingletown, Skaggs [Springs], 

 Stanford University, Stillwater Cove in Sonoma Co., Stone Canyon in 

 Monterey Co., Templeton, Trinity Camp in Trinity Co., Ventura, 

 Volcano, Walnut Creek, Warner Springs, Wawona in Mariposa Co., 

 Willi ts, and Woodlake). 



Dates of collection are mostly from April 8 to the end of May. 

 Those outside of this range are: March 18 in Jacalitos Canyon at 

 Coalinga, Calif.; March 20 in Riverside Co., Cahf.; March 22 at 

 Templeton, Calif., and in Stone Canyon, Monterey Co., Cahf., March 

 23 at San Ardo, Calif. ; June 2 at Shingletown, Calif. ; June 5 at Atasca- 

 dero, Calif.; and June 9 at Davis, Calif., and at Willits, Cahf. 



This subspecies occurs in California. It is adult from spring to 

 early summer. 



14. Genus Joppidium 



Figure 315,a 



Joppidium Cresson, 1872, Trans. American Ent. Soc, vol. 4, p. 160. Type: 



Joppidium nibriceps Cresson; designated by Viereck, 1914. 

 Joppoceras Ashmead, 1900, Proc. U.S. Nat. Mus., vol. 23, pp. 39, 40. Type: 



"Cryptus" { = Joppidium) dubiosum Cresson; original designation. 

 Opisoxestus Ashmead, 1900, Proc. U.S. Nat. Mus., vol. 23, p. 40. Type: Opi- 



soxestus ferrugineus Ashmead; original designation. 

 Isocryptus Brethes, 1927, Ent. Mitt., vol. 16, p. 308. New synonymy. Type: 



(Isocryptus azureus Brethes) = moer ens (Perty); monobasic. 



Front wing 6.0 to 16.0 mm. long; body slender; frons unarmed; 

 clypeus moderatel37^ large, moderately convex, its apical margin weakly 

 convex, without a median tooth; subapical portion of female flagellum 

 vddened, flattened below; mesoscutum moderately convex, polished, 

 with dense punctures that are usually fine and weak but sometimes 

 moderately coarse and strong; notaulus usually sharp and reaching 

 beyond center of mesoscutum but in the Moerens group the notaulus 

 weak and shorter; epomia rather strong; propodeum in profile rather 

 weakly convex; basal transverse carina of propodeum usually strong 

 and complete but sometimes obsolescent; apical transverse carina of 

 propodeum present or absent, or represented by a pair of almost 

 horizontal, sublateral crests; wings of all Nearctic species black or 

 dark brown, of some Mexican species heavily banded wth yellow and 

 dark brown; areolet large, quadrangular or broadly pentagonal; 

 ramellus absent ; nervulus distad of basal vein ; nervellus broken at or 

 below the middle; axillus long, strongly divergent from anal margin, 

 a little closer to submediella than to anal margin; first abdominal 

 segment slender, wealdy decmwed, terete, without longitudinal 

 carinae or sometimes with a dorsolateral carina, with or without a 

 small basolateral triangular tooth, its spiracle beyond the middle 

 but rather far from the apex, the postpetiole only weakly expanded, 



