6 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 60. 



basal width of mandible; eye two-thirds as broad as long; basal 

 flagellar joint about 10 times as long as thick; second, three-fourths 

 as long as first; third, three-fourths as long as second; scape densely 

 punctate. Thorax subopaque, mesoscutum granular, scutellum and 

 pleura minutely punctate; propodeum subpolished with more or 

 less coriaceous roughening; basal and apical carinae entire and 

 strong, other carinate absent except basal and middle abscissae of 

 median and apical abscissa of lateral, all of which are weaker than 

 the transverse carinae; basal area large and nearly triangular; 

 areola a nearly equilateral pentagon; spiracle small, round; legs 

 slender, hind basitarsus ten or more times as long as thick, inner 

 calearium about a sixth as long as basitarsus. Abdomen finely 

 granulate basally, polished apically ; first tergite slightly more than 

 twice as long as wide at apex, its sides weakly arcuate, lateral carinae 

 strong to apex, dorsal carinae fading out before middle, the space 

 between impressed; second tergite about as long as wide, its sides 

 somewhat divergent, its spiracles at basal third ; third tergite nearly 

 as long as second; others rapidly shorter; sixth and seventh mem- 

 braneous in middle dorsally. 



General bod}^ color black, prothorax and mesothorax largelj 

 rufous, tergites beyond first with apical margins white, venter largely 

 white; legs largely testaceous; mandibles piceous with white spot 

 toward base; palpi white, apical three joints of maxillary fuscous, 

 antennae black; pronotum black medially and in furrow above; 

 notauli and borders of mesoscutum black ; scutellum rufous, its lat- 

 eral areas black ; borders of mesopleurum and entire prescutum black, 

 mesopleurum otherwise and sternum rufous; metapleurum black, 

 more or less reddish in middle; propodeum black; wings hyaline, 

 venation brown, costa, radix, tegula, and humeral angle of pronotum 

 white; legs testaceous, front and middle ones almost stramineous, 

 their coxae at apex, trochanters largely, and femora at base and at 

 apex beneath white; apical joint of hind trochanter and its femur 

 at base white, tibia and tarsus (only the basitarsus is present) 

 fuscous; abdomen black, second tergite medially and laterally at 

 apex narrowly white, other tergites with same markings more dis- 

 tinct, the median and lateral marks narrowly connected; epipleura 

 white, the second Avith a small brown spot; sternites white with a 

 larger or smaller brown spot at upper anterior angle. 



Host. — Callidiwn sequoiae Fisher. 



Type locality. — Giant Forest, California. 



Type.—Q^t. No. 24617, U.S.N.M. 



Described from one female reared by F. C. Craighead under Hop- 

 kins U. S. No. 10651 P, on December 21, 1918. 



