292 U. S. NATIONAL MUSEUM BULLETIN 216 paet 3 



Co.); Colorado (Poncha Pass and Poudre Camp in Larimer Co. at 

 5,200 ft.) ; Idaho (Pollock) ; Nevada (Verdi) ; New Mexico (Las Cru- 

 ces) ; Oregon (Blitzen Valley and Summer Lake in Lake Co.) ; and 

 Utah (Newton, South Creek in Beaver Co., and Watson in Uintah 

 Co. at 5,300 and 5,360 ft.). 



Dates of collection are mostly in July and August. Those outside 

 of this range are: June 16 at Verdi, Nev.; June 28 at Boca, Calif.; 

 June 29 at Lake Britton, Shasta Co., Calif.; and October 13 at Antioch, 

 Calif. 



This species is widespread west of the Eocky Mountains. 



6. Compsocryptus crotchii (Cresson) 



Figure 363 



Cryptus Crotchii Cresson, 1878, Proc. Acad. Nat. Sci. Philadelphia, vol. 30, p. 

 362; cf, 9. Lectotype: ?, San Diego, Calif. (Philadelphia). 



Male: Front wing 12 to 13 mm. long; temple at midheight about 

 1.07 as long as eye, moderately convex; punctures on mesopleurum of 

 moderate size, strong, separated by about 0.7 their diameter; basal 

 transverse carina of propodeum complete but indistinct sublaterally; 

 apical transverse carina absent. 



Ferruginous, the head and mouth parts fulvous or fulvoferruginous. 

 Frontal orbit yello\vish; median part of vertex and frons, sometimes 

 median part of face, markings along clypeal suture, occiput, most of 

 thorax, markings on coxae, hind femur except near base, hind tibia 

 except near base, basal 0.65 ± of first abdominal segment, basal 0.4 ± 

 of second and third tergites, and basal band on median part of fourth 

 and fifth tergites, black; apical 0.45 of flagellum fuscous; basal 0.55 

 of flagellum weakly infuscate above; wings marked as in female; 

 front and middle legs beyond femora and hind tarsus yellowish. The 

 ferruginous areas of thorax include broad upper margin and narrow 

 marginal areas on collar and near front lower corner of pronotum, 

 most of mesoscutum and scutellum, most of median part of propodeum 

 (but nearly subdivided by a median black stripe), subtegular ridge, 

 and area on upper half of mesopleurum. 



Female: Front wing 10.8 to 13.0 mm. long; temple at midheight 

 about 1.0 as long as eye, moderately convex; second flagellar segment 

 about 3.5 as long as wide; widest subapical segments of flagellum 

 about 0.65 as long as wide; punctures on mesopleurum small, strong, 

 rather crowded and on median part of mesopleurum a little confluent 

 with irregularly longitudinal wrinkling; basal transverse carina of 

 propodeum represented by a short vestige behind spiracle; apical trans- 

 verse carina distinct and rather strong, but its median 0.2 ± absent; 

 hind femur about 4.9 as long as deep ; hairs on median and medioapical 

 part of second tergite sparse, their sockets separated by about 2.0 



