no. 1837. NEW SPECIES OF WASPS— ROHWER. 573 



as the length of antennal joints three and four; fourth antennal joint 

 a little longer than third; mesonotum finely, closely punctured or 

 granular; scutellum punctured with distinct punctures; dorsal aspect 

 of propodeum closely granular, sides and posterior face finely, trans- 

 versely striated; fovea of the posterior face not sharply defined; 

 ema-rgination of the fore femora rounded; inner calcarium of the 

 posterior tibiae about the same length as the basitarsus; second 

 and third cubital cells on the radius of about the same width; abdo- 

 men above finely renticulated, more strongly so apically; eighth 

 ventral plate broad, very shallowly circularly emarginate, lobes 

 wanting. Black; tegulse ferruginous; four apical joints of the tarsi 

 rufous; three basal segments of the abdomen red; eyes (dry) greenish; 

 wings yellowish hyaline, venation rather weak, testaceous; face 

 clypeus; thorax and abdomen above with rather sparse silver pile. 



Trinidad, Colorado. One male collected July 19, 1899. Collector 

 unknown. 



Type. — Colorado Agricultural College. 



This species is closely related to T. exsectus Fox, but is distin- 

 guished from that species by the yellow wings, the testaceous venation 

 and the clypeus being armed with a lateral tooth; the scutellum not 

 being impressed. 



TACHYSPHEX JOHNSONI, new species. 



Female. — Length 8 mm. Anterior margin of the clypeus rounded 

 out, with two rather small lateral teeth, near the eyes is a larger, 

 sharper tooth; basal portion of clypeus finely, closely punctured; 

 front with distinct, rather close punctures; vertex more finely and 

 closely punctured; a furrow from the anterior ocellus to level of the 

 antenna?; occiput flat; distance between the eyes at the vertex 

 a little greater than the length of antennal joints two and three, but 

 not as great as the length of antennal joints three and four; third 

 antennal joints a little shorter than the fourth; mesonotum and 

 scutellum finely, closely punctured; scutellum not impressed ; dorsal 

 aspect of propodeum finely granular; sides and posterior face trans- 

 versely striated, the stria? on the posterior face stronger; posterior 

 face with a somewhat heart-shaped fovea; legs not strongly spinose; 

 inner calcarium of the posterior tibia?, as long as the basitarsis; 

 second and third cubital cells of about equal width on the radius; 

 abdomen apparently impunctate; pygidium a little more than twice 

 as long as broad at the base, poorly defined with large widely sepa- 

 rated punctures. Black; mandibles at the apex and apical joints of 

 the tarsi rufous; tegula? luteus; two basal segments of the abdomen 

 clear red; eyes (dry) pale green; wings hyaline; venation testaceous 

 and rather weak; face, clypeus, femora beneath, tibia? and thorax 

 more sparsely, and bands on the dorsal abdominal segments with 

 silvery pile. 



