212 AMERICAN HYMENOPTERA. 



though appearing finely rougheued. Abdomen shining, indistinctly, rather 

 closely punctured. The head, thorax and abdomen are more or less covered 

 with thin, erect, whitish pubescence. The erect pubescence of the abdomen be- 

 ing confined to the venter and basal dorsal segment. The legs and the abdomen 

 are conspicuously more or less covered with appressed silvery to silvery, with a 

 gold tint pubescence. 



CoZor.— Almost entirely black. Tibial spurs Ijrownish testaceous. The tarste 

 brownish. 



Type. — University of Kansas. 



Type locality. — Douglas Co., Kansas, 900 ft. 



One male, collected by F. H. Snow. 



Diodontiis bruniieicoriiis n. sp. 



Related to rugosis, from which it is easily distinguished by the 

 dull dorsulum and the pale brownish antennae. 



%i . — 35 mm. — Clypens anteriorly very slightly emarginate. P'ront subopaque 

 appearing granular and inipunctate. Tlie ocelli rather equidistant. The dist- 

 ance between the posterior ocelli approximately as great as that between them 

 and the nearest eye margin. The vertex and occiput with apparently the same 

 sculpture as the front. The antennae rather robust, and the third joint a little 

 shorter than the fourth, the fourth and succeeding joints subequal. Between the 

 sixth and the terminal joint the under side of the antennse appears reddish. 



Dorsulum subopaque, with minute, almost adjoining punctures. The pleura 

 indistinctly punctured and appearing roughened. The mesopleura rather rugu- 

 lose. Metanotum distinctly rugulose, ' with two indistinct channels down the 

 middle. The posterior face of the metathorax also rugulose, but not spinose. 

 Covered with a very short, more or less silvery pubescence. The mandibles yel- 

 lowish, excepting at tips, where they are brownish translucent. Scape and pedi- 

 cellum black or blackish. 



Femora at tip, tubercles, tibiae and tarsi yellow. Tegulse testaceous, as are the 

 spurs. The wings with a faint brownish tint, stigma and nervures more or less 

 dark brown. In other respects this insect is black. 



Type. — University of Kansas. 



Type locality.— Sedgwick Co., Kansas, 1300 ft. 



One male taken iii Sept., by E. S. Tucker, U. of K., lot 361. 



I'assaltecus equalis n. sp. 



Antennae slender, as in annuldtus, but the third joint as long as 

 the fourth. 



9- — 3.5 mm. — Frontal impression indistinct. The distance between the poste- 

 rior ocelli approximately equal to the distance between them and the nearest eye 

 margin. Apical joint of the antennae hardly longer than the preceding joint. 

 Dorsulum shining, very finely closely punctured. 



Scutellum and postscutellum more shining and more distinctly punctured than 

 the dorsulum. Metathorax rounded and rugulose. Abdomen polished, pubes- 



