350 Annals Entomological Society of America [Vol. IX, 



Xylocelia gillettei Fox. 



1892. Diodontus gillettei Fox, Trans. Amer. Ent. Soc, xix, p. 316. 



Type locality: Fort Collins, Colorado. One female speci- 

 men in the University collection from Harrison, Nebraska, 

 August 20, 1912 (R. W. Dawson). 



Xylocelia striatus n. sp. 



9 . Length G-G.5mm. Labrum not exposed; front very finely 

 granulate, sparsely punctate; impressed line of front wanting; antennae 

 distinctly longer than the head, slightly puberulent; first joint of flagel- 

 lum distinctly longer than the second; mesoscutum shining, densely 

 punctate anteriorly, very sparsely punctate posteriorly; mesoscutellum 

 shining, with a very few shallow punctures; episterna coarsely, trans- 

 versely rugose; upper surface of propodeum with a fairly distinct, 

 reticulate inclosed space, laterally with the upper surface obHquely 

 rugose; the posterior face finely rugose, with a median, wedge-shaped 

 fovea; sides of the propodeum sparsely, obliquely striate, the postero- 

 lateral angles produced, forming a blunt spine; abdomen finely, dis- 

 tinctly punctate; wings hyaline; stigma and nervures of anterior wings 

 piceous. Black; mandibles except the tips, the posterior lobes of the 

 pronotum yellowish; tegulee and anterior tibi« in front yellowish 

 testaceous. Form robust. 



cf . Unknown. 



Type: A female collected at Dickinson, North Dakota, 

 July 4, 1914 (O. A. Stevens) ; one paratype collected at Laramie, 

 Wyoming. May easily be distinguished by the coarse sculpture 

 of the episterna, the characteristic sculpture of the posterior 

 face of the propodeum, the presence of blunt lateral spines on 

 the propodeum and the robust form. 



Xylocelia siouxensis n. sp. 



9. Length, 5mm. Labrum not exposed; front finely granulate, 

 sparsely punctate; impressed line of front distinct; vertex, occiput 

 and cheeks sculptured like the front; antennae distinctly longer than 

 the head, slightly puberulent; first joint of flagellum distinctly longer 

 than the second; mesoscutum shining, densely punctate anteriorly, 

 very sparsely punctate on the posterior half; mesoscutellum shining 

 very sparsely punctate; episterna above coarsely reticulate anteriorly, 

 below and posteriorly, finely, transversely rugose; propodeum above 

 finely reticulate, the posterior face more shining, with quite large, 

 shallow foveas, supra-medially there is a small, somewhat depressed, 

 triangular area; sides of the propodeum rather shining, with four or 

 five coarse, oblique striae; abdomen microscopically punctate; pygidiimi 

 about one and one-fourth times as long as wide; strongly punctate; 

 wings hyaline, stigma and nervures of anterior wings piceous. Black; 



