1917] A Synopsis of EumenidcB 349 



margin of the prothorax, a large patch below the tegular, tegulse except 

 a central spot, band on the anterior margin of the scutellum, metanotmn, 

 a spot on either side on the propodeum, lower half of the posterior 

 margin of the propodeum, a ^wide band dorsally on the posterior margin 

 of the petiole and narrower on the second segment of the gaster, indis- 

 tinct bands on the following two segments, an indistinct cuneiform 

 spot on either side of the second segment, ends of the femora, all of 

 tibiae and tarsi, yellow; median antennal segments, dorsal aspect of 

 the head, anterior and posterior parts of the mesonotum, margins of 

 the scutellum and the metanotum, ventral parts of the thorax, a stripe 

 running up under the tegulcC, lower part of furrow of the propodeum, 

 petiole except apical band, coxae, trochanters and basal ends of femora, 

 black. Covered with very fine golden pile. 



Colorado. Described from one male. 



Type: Cat. No. 21377, U. S. National Museum. 



Of the North American members of this genus this species 

 is the most distinct. In addition to the difTerences mentioned 

 in the key it may be distinguished by the unusually long 

 clypeus, the surface of which is convex, not being flattened 

 apically, by the contrasting stoutness of the thorax and slender- 

 ness of the gaster, and the general brownish color. Because of 

 the pyriform petiole and the absence of punctation along the 

 ventral margin of the tergite it is placed in this group. A series 

 of specimens including females might place it in a group by 

 itself, but it certainly does not belong in any of the other species 

 groups included in this paper. 



Eumenes boUii Cresson. 



Eumenes bollii Cresson, E. T., Trans. Amer. Ent. Soc. vol. 4, 1872, p. 232-233— 

 Isely, Dwight, Kans. Univ. Sci. Bui. vol. 8, 1914, p. 252-253, 299-301. 



Bollii is unique among the North American species by 

 lacking punctations on the dorsal aspect of the petiole, and is 

 further distinguished from the others of the smithii group by 

 having a campanulate petiole. 



Distribution. — This species inhabits southwestern United 

 States and there is one specimen in the U. S. National Museum 

 labeled " Mexico. " Specimens from the United States are from 

 the following localities: Brewster Co., Del Rio, Valverde Co., 

 and Waco, McLennan Co., Tex.; Riley Co., Kans.; Rocky 

 Ford, Otero Co., Colo.; Des Moines, Union Co., and Sacramento 

 Mts., Otero Co., N. M.; Huachuca Mts., Ariz.; Reno, Washoe 

 Co., Nev. ; San Berdino Co. and Stratford, Kings Co., Calif. 

 The writer has collected it in Ness, Trego, Osborne and Norton 

 counties, Kansas. 



