172 KANSAS UNIVERSITY SCIENCE BULLETIN. 



which separates it from the disc, the face coarsely gi'anulate and with 

 large sparse striae and a median fovea; eighth ventral segment broadly 

 emarginate. Colored as in the o . Length, 6-6.5 mm. 



Five J" J and two o o ; Smith, Barton and Russell counties; 

 June-September. The specimens fit Fox's description fairly well and 

 likewise that of Patton, the describer of the species. I have not .seen 

 the type. The two o o are identical with a specimen in the col- 

 lection of the Philadelphia Academy of Sciences, where, however, there 

 are at least two species in the series labeled acuta. It seems to be al- 

 lied to nigrescens o , of Rohwer, which, however, has a different 

 clypeus. 



Tachysphex terminatus (Smith). 

 (Fig. 63, clypeus j ; 32a, antenna, o .) 



Larrada terminata Smith; Cat. Hym. Brit. Mus., IV, 291; 18.56. 

 Tachysphex terminatus Fox; Pr. Ac. Nat. Sci. Phil., 520; 1893. g j . 



o . Greatly resembles fusus, from which it differs in not or in 

 scarcely having the clypeus drawn out mesad on its anterior margin; 

 the antennje are a little stouter, the third joint is decidedly shorter 

 than the fourth ; the front is much more closely punctuate, in fact al- 

 most granulate; the disc of the propodeum is a little more finely gran- 

 ulate; the pygidium is nearly two and one-fourth times as long as its 

 basal width. Colored as in fusus. 



J . Like fiisus, but the front is more closely punctate, for whereas 

 in ftisus the punctures just below the anterior ocellus are well sep- 

 arated, sparse, and the face shining there, the same are quite close 

 to almost granular in teryninatus. The lateral angles of the clypeus are 

 said to be sharp and almost dentiform. Length, 6 mm. 



Fairly plentiful in western Kansas, where it has the same habitat 

 as fusus. 



Tachysphex fusus Fox. 



(Fig. 64, clypeus, o ; 326, antenna, o .) 



Tachysphex fusus Fox; Proc. Acad. Nat. Sci. Phil., 519-20; 1893. j j . 



o . Moderately stout. Anterior margin of clypeus subtruncate, 

 slightly produced mesad, no lateral teeth; antennal joints 3 and 4 sub- 

 equal; frons rather coarsely punctate, vertex a little more sparsely so, 

 occiput rather depressed; scutum with strong separate punctures, meso- 

 pleurffi likewise; disc of propodeum strongly granulate, the sides 

 finely striate, posterior face more coarsely and rather indistinctly 

 striate, with a median fovea; marginal cell rather narrowly and 

 obliquely truncate; abdomen smooth and shining; pygidium about two 

 times as long as wide at its base, sparsely punctate. Black; apex of 

 abdomen red. Silvery pubescence rather dense. Length, 9-11 mm. 



J' . Anterior margin of clypeus subtruncate, with sharp lateral 

 angles; frons with large confluent punctures; flagellum a little thick- 

 ened; thorax with strong separate punctures; propodeum somewhat 

 more coarsely sculptured in this sex. The inse?t is sometimes entirely 

 black. Length, 6-8 mm. 



