WILLIAMS: LARRID^ OF KANSAS. 147 



fact almost granulate, punctures sparser on anterior part of vertex 

 and in the vicinity of the anterior ocellus; scutum and scutellum closely 

 punctate, the punctures not very fine but distinct; pleurae closely punc- 

 tate; disr of pi-opodeum with some irregular median transverse striae 

 and a shallow median depression which is stronger and widened apically; 

 the reit of the disc is granulate, sides of propodeum finely granulate, the 

 posterior face granulate-striate, a narrow median sulcus near the top 

 of the posterior face and a raised line near the bottom (pedicel of ab- 

 domen) ; legs moderately spinose; venation normal; abdomen finely punc- 

 tate, the pjgidium coarsely so, eighth ventral segment I'ounded out. 

 Black; apex of tarsi somewhat testaceous, as also a part of tegulae; wings 

 dark fuscous, venation still darker. Sparse erect brownish pile on upper 

 portion of frons and on the vertex and sides of propodeum; abdomen 

 with weak dorso-lateral silvery fasciae of pile; pygidium sparsely 

 pubescent. Length, 11.5 mm. (type) ; range, 8.5-11.5 mm. 



Twenty-three specimens from Meade, Morton, Wallace, Norton, Grant, 

 Stanton and Seward counties. There are also specimens from Montana, 

 etc., in the Philadelphia Academy of Sciences. 



This insect has been regarded by Fox as a black variety of rngosa, 

 from which it differs constantly in a large series of both species. Ater 

 has the scutum shining and less punctate, as opposed to the almost 

 opaque and granulate scutum of riigosa. It also averages smaller than 

 rugosa and the antennae appear a little stouter; the median impressed 

 line of the disc of the propodeum is not polished apically, as is somewhat 

 the case vnth rugosa, while the abdomen is weakly fasciate in the new 

 species. It is related to rugosa and teiiuicor-nis. 



Larropsis rugosa (Fox). 



Ancistrovmia rugosa Fox; Proc. Acad. Nat. Sci. Phil., 496-7; 1893. ^. 

 q . Moderately slender. Anterior margin of clypeus broadly rounded 

 out, with two rather obtuse lateral teeth ; mandibles slender, bidentate 

 within; antennae long and slender, the apical joints particularly, joints 

 3 and 4 subequal; front and vertex finely and closely punctuate, ap- 

 pearing almost granulate; pronotum and mesonotum punctate about like 

 head; disc of propodeum finely granulate, but with rather irregular 

 transverse striae on the shining, rather broad and slightly depressed 

 median line which widens apically; the narrow sulcus on the posterior 

 face widens dorsally; the face itself is finely granulate; legs rather 

 delicately spinose; the tarsal comb of weak, slender spines; longer 

 metatibial spur shorter than first joint of hind tarsi; abdomen finely 

 and closely punctate; pygidiClm rather narrow, its sides very slightly 

 bowed out, rather broadly rounded apically and somewhat closely punc- 

 tate and ai-med with short bristles for its apical two-thirds or more. 

 Black; mandibles dark red in the middle; tip of tegulae brownish; tarsi 

 somewhat brownish; wings dark fuscous iridescent; second abdominal 

 segment orange red; pygidial bristles bro\vnish. Practically devoid of 

 pubescence or pile. Length, 16 mm. 



