126 S. A. ROHWER. 



emarginate in the middle; very finely punctured. Head very finely 

 granular. Eyes distinctly converging toward the vertex; distance 

 between them less than the length of the antennal joints 3 and 4. 

 Ocelli in an acute triangle, no furrow from the anterior one. Third 

 and fourth antennal joints equal, apical joint rather acute. Prothorax 

 not reaching the level of the dorsulum. Pro- and mesothorax, also 

 scutellum finely granular. Metanotum finely granular with a fine 

 median carina. Metapleurse obliquely striated. Posterior face car- 

 inated above, with a triangular fovea near top, shining. Legs feebly 

 spined. Venation normal. Abdomen shining, perhaps very finely 

 tessellate. Color: Head and thorax dull black; abdomen shining dark 

 blue; apex of the mandibles piceous; front, thorax and three dorsal 

 abdominal segments with sparse silvery pile; basal two- thirds of 

 wings hyaline, apical third dusky; venation black. 



Male. — Length 4 mm. The lobes of the clypeus are not as distinct 

 as in the female. The middle carina of the metanotum is not complete 

 basally. The mandibles are entirely black, otherwise it is like the 

 female. 



Habitat.— ? Boulder, Colorado, August 4, 1908; S May 

 2, 1908; I May 15, 1908 (Roh.). 



The dark blue abdomen and black legs separate this from 

 other species. 



Miscophinus maurus n. sp. 



Female. — Length 3.5 mm. Anterior margin of the clypeus not 

 dentate; closely finely punctured; middle carina quite distinct. Head 

 finely granular. Eyes but slightly converging above, distance between 

 them at the vertex greater than the length of antennal joints 3 and 4, 

 about the same as 2, 3 and 4. Ocelli in a rather low triangle; the 

 lower one in a pit which elongates into a furrow toward the clypeus. 

 Antennae rather short and stout; joints three and four equal. Scu- 

 tellum, pro- and mesothorax finely granular. Metanotum granular, 

 with a distinct median carina. Metapleurae striato-granular. Pos- 

 terior face with some strong transverse striae, an arrow-shaped fovea. 

 Legs without spines. Second cubital cell small. Abdomen finely 

 tessellate. Black; mandibles and tarsi piceous. Clypeus, thorax and 

 abdomen with silvery pile; that of the clypeus denser. Wings smoky 

 hyaline, apices a little darker; venation dark brown. 



Male. — Length 4.5 mm. The middle lobe of clypeus more acute 

 than in female. The furrow from anterior ocellus not so strong. 

 Third antennal joint a little longer than fourth. Silvery pile denser. 

 Wings not so dark. Otherwise it agrees with the female. 



A paratype female differs from the type in having the mandibles 

 black; the anterior ocellus larger, the depression which it occupies 

 smaller; and the ocelli in a nearer equilateral triangle. 



