WILLIAMS: LARRIDiE OF KANSAS. 165 



three-fourths of 4; interocular space almost as great as the length of 

 joints 3 and 4; frons quite finely granulate; vertex finely and closely 

 deep-punctate, rather opaque, postocellar depression moderately deep; 

 thorax a little depressed anteriorly mesad, veiy finely granulate; disc of 

 propodeum even more finely granulate than rest of thorax, nearly coriace- 

 ous, the sides about like disc, posterior face more irregularly and coarsely 

 granulate, with traces of striations and a broad, moderately deep, almond- 

 shaped fovea; legs moderate, longer spur of metatibiae shorter than first 

 joint of hind tarsi; venation moderately heavy, the marginal cell rather 

 narrow and scarcely obliquely truncate; abdomen short; pygidium slightly 

 convex and with large scattered punctures in addition to being finely 

 reticulate, barely twice its basal width. Black; wings clear, venation 

 brownish testaceous, first three abdominal segments red. Insect well sup- 

 plied with sericeous pile; abdomen silvery fasciate. Length of type, 

 7.7.5 mm. 



There are several paratypes, all of which are in fresh condition, from 

 Barton county, Kansas; June 20, 1912. 



This species seems to be most nearly related to coimuuli^ and inundiis; 

 it diff'ers from the former in not having the sides of the propodeum striate, 

 and in having the abdomen silvery fasciate; it can be separated from 

 mundus by the entire clypeal margin, etc. The sculpture is even finer than 

 in the larger tarsatns. 



Tachysphex tarsatus (Say). 

 (Fig. 36, ocellar area; 62, clypeus, j ^ ; 87, fore femur, > .) 

 Larra tarsata Say; Western Quar. Report, II, 78; 1823. o . 

 Tachysphex tarsatus Fox; Proc. Acad. Nat. Phil., 512; 1893. ^ q . 



2 . Stout. Anterior margin of clypeus subtruncate, often slightly 

 emarginate mesad, unidentate laterally, the rim wide; joint 2 of antennae 

 only a little more than one-half the length of 3, which is a little shorter 

 than 4; interocular space about equal to joints 2 and 3, perhaps a little 

 greater; head quite finely granulate, the thorax decidedly so; disc of pro- 

 podeum coriaceous, sides likewise, posterior face finely striate, the fovea 

 deep; legs moderately spinose; wings nearly clear, marginal cell obliquely 

 subtruncate; pygidium about twice as long as its basal width, and sparsely 

 punctate. Black; tarsi largely obscure reddish, venation dark brown; ab- 

 domen entirely red. Sparse appressed silvery pile. Length, 8-11 mm. 



^ . Clypeus subtruncate, not dentate; interocular space about equal to 

 joints 3 and 4; front coarsely granulate. Colored as in o . Length, 

 7-10 mm. 



Common in the western part of the state. Rather easily recognized by 

 its very fine sculpture, size, unidentate clypeus, etc. 



■4-Univ. Sci. Bull.. Vol. VIII. No. 4- 



