518 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



lar; scutellum granular; dorsal aspect of the propodeum %vith irregu- 

 lar radiating striae ; sides of the propodeum with fine striae ; posterior 

 aspect with irregular, transverse striae ; tergites shining, with sparse, 

 well-defined punctures; the apical margin depressed about one-third, 

 the depression broader medianly; apical tergite more coarsely punc- 

 tured than the preceding ones; apical sternite broadly rounded to a 

 minutely emarginate apex. Black; pronotum, tubercule, tegulae, 

 metanotum, apices of the four anterior femora (broader beneath), 

 the four anterior tibiae, the apices of the tarsi beneath, extreme apex 

 of the posterior femora, and the narrow line on the posterior tibiae 

 and most of the posterior tarsi yellowish; flagellum at about the middle 

 brownish; face, thorax, and depressed area on the tergites with ap- 

 pressed golden pile; wings dusky hyaline, the bases slightly darker; 

 venation pale brown, costa and stigma dark brown. 



Gualan, Guatemala. Described from one male collected on flow- 

 ers of Iresine paniculata, by W. P. Cockerell. 



Type.— Cat. No. 16025, U.S.N.M. 



TACHYSPHEX COCKERELLAE, new species. 



This species is quite distinct by the dentation on the clypeus and 

 the puncturation. 



Male. — Length, 8 mm. Anterior margin of the clypeus produced 

 in the middle, production sharply angled and with a median tooth, 

 surface of the clypeus finely punctured laterally, with large separate 

 pimctures medianly; above each antenna is a faint carina which 

 extends dorsally for a short distance and then curves laterally until 

 it is tangent with a line drawn from the antennal foveae and touching 

 inner orbits of the eye at the vertex; head with close distinct punc- 

 tures; frontal median line present; intraocellar area divided by a 

 broad furrow ; distance between the eyes at the vertex slightly shorter 

 than the length of the third and fourth antemial joints; a Y-shaped 

 depression behind the lateral ocelli; vertex more sparsely punctured 

 than the front; antemiae rather short, third joint distinctly shorter 

 than the fourth; mesonotum sculptured like the front; scutellum 

 more sparsely punctured than the mesonotum; dorsal aspect of the 

 propodeum rather coarsely punctato-reticulate, posterior aspect of 

 the propodeum perpendicular but not sharply separated from the 

 dorsal aspect, finely, transversely striato-punctate ; longer calcarium 

 of the posterior tibiae about three-fourths the length of the hind 

 basitarsus; abdomen shiny; the apical margin of the first three ter- 

 gites depressed more than one-third the length of the segment; apical 

 ventral segment deeply, arcuately emarginate, the lobes narrow, 

 pointed at the apex. Black; abdomen rufous; the apical three joints 

 of the hind tarsi piceous; head and thorax densely clothed with, gray 

 pubescence; wings dusky hyaline; costa and stigma dark brown; 

 venation pale brown. 



