no. 1837. NEW SPECIES OF WASPS— ROHWER. 575 



TACHYSPHEX MAURUS, new species. 



The female runs in Fox's table to nigrior Fox, but the clypeus has 

 two small lateral teeth, and the punctures of the mesonotum are 

 small and widely scattered. The male runs in the same table to 

 mundus Fox, but the first joint of the flagellum is one-half as long as 

 the second, and the inner calcarium of the hind tibige is shorter than 

 the hind basitarsis. 



Female. — Length 9 mm. Front with small separate punctures, 

 closer along the inner orbits; interocellar area closely punctured, 

 indistinctly parted; vertex with widely separated punctures, and a 

 Y-shaped impressed line; space between the eyes at the vertex 

 greater than the length of the second and third antennal joints, but 

 much less than the length of the third and fourth; third joint much 

 shorter than the fourth, the fourth and fifth subequal; propodeurn 

 granular dorsally, punctured laterally, striate posteriorly; second 

 cubital cell longer on the radius than the third; inner calcarium of 

 the hind tibia? subequal with the length of the hind basitarsis; hind 

 basitarsis curved basally; apical third of the dorsal abdominal seg- 

 ments depressed; pygidium well defined twice as long as the basal 

 width, with well-separated punctures, apex narrowly truncate. Black; 

 tegula?, spines, and calcaria testaceous; rather densely clothed with 

 silvery pile; wings hyaline, iridescent, venation dark brown. 



Male. — Length 6 mm. Clypeus sharply rounded medially, the 

 teeth small; front closely and uniformly punctured; abdominal seg- 

 ments not as broadly depressed as in the female; last ventral seg- 

 ment squarely emarginate, lobes sharp, narrow; hind basitarsis not 

 curved. Otherwise as in the female. 



Lee County, Texas. Two females and two males collected by Rev. 

 G. Birkmann in May, June, and August. 



Type.— Cat. No. 13756, U.S.N.M. 



TACHYSPHEX NEOMEXICANUS, new species. 



Belongs in with montanus (Cresson) pauxillus Fox, and consimilis 

 Fox, but may be separated from these by the conformation of the 

 clypeus, the size and the color. 



Female. — Length 12 mm. Anterior margin of the clypeus cren- 

 ulate, the lateral angles not sharp; clypeus strongly convex, the 

 lower portion smooth, shining, with large, separate punctures, basal 

 portion with close, small, distinctly defined punctures; front with dis- 

 tinct, close, well-defined punctures; the punctures of the vertex 

 separated; antennal foveas sharply defined above, large; occiput seen 

 from above straight; an impressed line extending from occiput to 

 between bases of antennas, interrupted only by the subtriangular- 

 shaped depression behind the lateral ocelli and the anterior ocellus; 

 space between the eyes at vertex greater than the length of antennal 



