188 BULLKTIN 4."., UNITEI) STATES NATIONAL MUSEUM. 



Prosacantha annuliconiis. isp. iiov. 



9 . ^ellgth, 2 to 2.2""". Head and abdomen black, shining; tlio tho- 

 rax dull rutims, punctate, the metatlioiax and nietajdeura stained 

 with black. Head transverse, the vertex subacute, face smooth, with 

 a few scattered iiunctures, the orbits longitudinally aciculated. An- 

 tenn.TB 12 jointed, hmg; the scape long, rufous, extending one-third its 

 length beyond the (►celli, its apex and the pedicel fuscous; the first 

 three funiclar joints are long, subequal in length, yeHowish white; 

 the fourth funiclar joint ami the club, black; the fourth funiclar 

 joint is a little longer than thick and fidly as thick as the preceding 

 joints. Scutellum roughly punctate; the i>o8t-scutellnm armed with 

 an unusually long a<'ute spine. Metathorax with the angles acute. 

 Wings fuscous, paler basally. Legs pale rufous, the cox.e and tro 

 chanters yellowish, the tips of the femora and tibiae a little fuscous. 

 Abdomen as long as the head and thorax t«>gether, polished, the 

 petiole and the second segment longitudinally striated. 



Habitat. — Washingtcm, D. C. 



Types in National Museum, American Entomological Society, and 

 Coll. Ashmead. 



Described from many specimens, taken in winter, by sifting. 



Prosacantha nigripes, sp. nov. 



$ 9. Length, 2 to 2.4"'". Black; tliorax and scutellum finely ru- 

 gose, subopaque; head transverse, vertex ])unctate, the occiput trans- 

 versely aciculated, the face longitu<linally striate, the cheeks with 

 strije converging toward the mouth. Mandibles rufous. Antenna^ 

 12-jointed, black, scape not extending beyond the middle ocellus; ped- 

 icel small; the first three funiclar joints n«'arly ecjual in length, about 

 thrice as long as thick. 



Posterior angles of metathorax with a short tooth. L»^gs entirely 

 black. Wings fusc<ms. Abdomen slightly longer than the head and 

 thorax together, ixdished, the petiole and second segment longitudi- 

 nally striated, the «lisk of the third segment faintly longitudinally 

 aciculated. 



In the $ the antenna' reach to the middle of the abdomen. The 

 fiagellar joints very slightly subequal, the first the longest and thick- 

 est, four times as long as thick. 



Habitat. — The Dalles an<l Portland, Oregon. 



Ty])es in Coll. Ashmead. 



Described from si>ecimens received from Mr. IL F. Wickhara. 



Prosacantha striatifrons, sp. nnv. 



S. Length, 2""". Black; head broadly transverse, shining, vertex 

 smooth. Irons and fiic«' longitu«lrnally striated; mandibles long, falcate, 

 pale rufous; thorax and scntelhim rugulose, opaijne; legs bi1)wnish- 



