1917] A Synopsis of EiimenidcR 361 



Eumenes cruciferorum Viereck. 



Eumenes cruciferorum Viereck, H. L., Trans. Am. Ent. Soc, vol. 33, 1908, 

 p. 388-389, pi. 13. 



Distribution. — Flagstaff, Coconino Co., Ariz. (Viereck); 

 Pecos, San Miguel Co., N. M. 

 \ Type. — Snow Collections, University of Kansas, Lawrence, 

 Kansas. 



Eumenes tricinctus new species. 



Female. — Length, 11 mm.; wing, 8.5 mm. Clypeus slightly longer 

 than wide, apical emargination of moderate depth, obtusely angular, 

 basal margin slightly incurved, punctations shallow and dense; thorax 

 truncate in front, sides between anterior margin and tegulse little convex; 

 furrow of propodeum shallow; petiole campanulate, two-fifths as wide 

 as long, inflation gradual beginning about halfway from base; second 

 segment of the gaster longer than wide, dorsal and lateral lines convex, 

 dorsal angle surmounted by a boss or hump making it higher than the 

 apical part of the segment, dorsal line recurved apically, depression 

 before apical margin wide extending to the sides; punctation on the 

 gaster medium. Black; clypeus except a black spot in ,the center, a 

 ridge between the antennse, a line on the anterior aspect of the scape, a 

 post-ocular line, a band on the anterior margin of the pro thorax, 

 oblique bands on the anterior margin of the mesonotum, tegulas, spots 

 below the tegulse, anterior half of the scutellum, metanotum, convexities 

 of the propodeum, a large spot on either side of the petiole confluent 

 with the band on the apical margin, three wide bands on the tergite 

 of the second segment of the gaster, two of which are interrupted 

 medially, the apical one entire, the ventral part of the segment and all 

 of the succeeding segments except basal black bands, ends of femora and 

 all of tibiee, yellow; tarsi, testaceous; wings, hyaline, brownish; pile 

 long on the head and thorax grading to fine on the second segment of the 

 gaster. 



Oregon. Described from two females. The National Museum 

 also has one specimen from Los Angeles Co., California. 

 Type.— Csii. No. 21383, U. S. National Museum. 

 This is a slender wasp, closely related to cruciferorum. 



Crassicornis Group. 



These two species are readily distinguished from the others 

 discussed in this paper by their general stoutness, the thick, 

 short antennas, the stoutness of the thorax and the gaster, and 

 the abruptness of the dorsal angle and the recurved dorsal line 

 of the second segment of the gaster. They are related to 

 iturbide Saussure. 



