May, '07] ENTOMOLOGICAL NEWS. l8l 



segments 1-5 with depressed, smooth, glossy areas. Pubescence very 

 short, scant, entirely white. 



$. — Length 8.5 mm. ; like $ of P. simulans but nervures paler. 



Types : — Glen, Sioux County, Nebraska, August 12, 1906, on 

 Hclianthus (H. S. Smith), $ , 9. 



Paratypes : — Type lot, 1 $ ; Warbonnet Canon, August 16, 

 1906 (L. Bruner), 1 $ . 



This species belongs to the labrosus — labrosiformis — solida- 

 ginis group, but is too large for any except labrosus, which, 

 however, has a yellow spot above the clypeus. It must be very 

 close to labrosus, and possibly represents only a larger western 

 subspecies of it. The female differs from that of labrosus in 

 its larger size and black tubercles. We have had no oppor- 

 tunity of making actual comparisons of the two species. 



5- Panurginus expallidus n. sp. 



6*. — Length 7 mm. ; clypeus, except for its extreme latero-apical pro- 

 longations which are black, labrum, broad lateral face marks running 

 up almost to bases of antennae and ending acutely, and a small, tri- 

 angular supraclypeal spot, bright yellow, the rest of the head, including 

 the mandibles, black. Clypeus and face uniformly coarsely and fairly 

 closely punctured, much more coarsely and closely so on the vertex. 

 Antenna? black, the scape coarsely punctured, joints 4-11 bright reddish 

 brown beneath. Mesonotum coarsely and closely punctured except on 

 the disk, and bearing three short impressed lines in front, mesopleura 

 very coarsely punctured. Tubercles yellow. Metathorax with a row 

 of short striae at base, its posterior and lateral faces finely, indistinctly 

 punctured. Tegulae testaceous. Wings hyaline, the nervures pale 

 brown, the stigma dark brown. Abdomen shining, first segment im- 

 punctate, following segments finely and closely punctured, apical mar- 

 gins of segments 1-5 depressed, smooth, tinged with testaceous. Legs 

 black with all the tarsi and knees, ends of intermediate and posterior 

 tibiae and whole of anterior tibiae, except a black median posterior 

 area, yellow. Pubescence sparse, densest on mesonotum, pleura, legs, 

 and sides and tip of abdomen, entirely white. Median process of 

 labrum broad, its sides moderately converging and straight, its apex 

 distinctly emarginate. 



9- — Unknown. 



Type:— Lincoln, Nebraska, August 28, 1900, on Helianthus 



tinner) $ . 

 Ibis species is also a member of the labrosus group, but is 

 too large for labrosiformis and solidaginis, and differs further 



