122 S. A. ROHWER. 



Diploplectron florissantensis n. sp. 



Female.— Length 6.5 mm. Clypeus rounded on the anterior margin, 

 an obtuse tooth medially. Head finely, closely punctures with a few 

 large punctures intermixed; punctures on the vertex and occiput finer 

 and less dense. Area above and between the antennae slightly raised, 

 in the middle with a distinct linear fovea; ocelli in an equilateral 

 triangle; third antennal joint slightly longer than the fourth. Dis- 

 tance between the eyes at the top about the same as the length of the 

 antennal joints 3-4. Dorsulum and scutellum finely punctured with 

 some large punctures intermixed; pleurae finely granular, at the base 

 with a few short striae. Legs, more especially the tibiae and tarsi, 

 with bristle-like hairs. Basal segments of the abdomen impunctate, 

 the apical ones with a few punctures. Head, thorax and legs entirely 

 black; abdomen rufous, the fifth segment brownish. Wings yellowish- 

 hyaline, darkest at the base; venation pale brown. 



Habitat.— Florissant, Colorado, June 28, 1908 (S. A. Roh- 



wer). 



A very distinct species, not close to any described one. 



Diploplectron ashmeadi n. sp. 



Male.— Length 5 mm. Anterior margin of the clypeus rounded, in 

 the middle produced into a bidentate process (the teeth of which are 

 of about the same width as D. rufoantennatus) ; the lateral teeth not 

 as strong as in the other species. Front finely granular or punctured, 

 with a few large punctures; line from the lower ocellus distinct, but not 

 strong; ocelli in an acute triangle; space between the eyes at the top 

 less than the length af antennal joints 3 and 4 but greater than the 

 length of joints 2-3. Third joint equal in length with the fourth; 

 apical joint obtuse at the apex; basal joints with some stiff hair. 

 Prothorax closely rather coarsely punctured; anterior part of the 

 dorsulum rather closely punctured; posterior part of the dorsulum, 

 scutellum and mesopleurae shining, with a few large punctures. Meta- 

 notum finely granular, bounded by a curved furrow; metapleurae 

 obliquely striated. First joint of the anterior tarsi emarginate be- 

 neath; legs normal. Abdomen shining, impunctate. Head, except 

 a black spot between the eyes at the top and a yellow spot on the 

 inner orbits, prothorax, dorsulum, mesopleurae, four anterior legs 

 ferruginous; metathorax except a spot above the posterior coxae, 

 mesopectus, abdomen, posterior legs (the tibiae and tarsi are piceous) 

 black. Wings dusky hyaline; apical, costal margin of the posterior 

 wings with a large smoky spot; venation brown. 



Habitat.— Rifle, Colorado, July 3, 1908 (S. A. Rohwer). 



A very distinct species. Named for Dr. Ashmead. 



