182 ENTOMOLOGICAL NEWS. [May, '07 



in the yellow tubercles and entirely yellow hind tarsi; from 

 labrosus it differs in its pale brown, instead of fuscous nervu- 

 ration, its black mandibles and the three impressed lines on 

 base of mesonotum. It is really very close to P. stigmalis, just 

 described, but differs in its uniformly hyaline wings with their 

 paler nervures and stigma, black mandibles, yellow supra- 

 clypeal spot, and differently shaped median process of labrum. 

 The face markings resemble those of P. rudbeckiae, but it dif- 

 fers at once from that species in its broader face, brown flagel- 

 lum, and pallid nervures. 



6. Panurginus simulans n. sp. 



<$. — Length 7.5 mm.; agrees with the description of P. expallidus to 

 which it is very closely related, but differs as follows: Lateral face 

 marks ending obtusely above; mandibles with a median yellow band; 

 median process of labrum narrower and more distinctly emarginate; 

 basal half of clypeus with a median impunctate line; front of scape 

 bright yellow; striae at base of metathorax extremely short, not over 

 one-third as long as in expallidus; abdomen somewhat less densely 

 punctured. 



$. — Length 8 mm. ; like the 6", except as follows : Head entirely 

 black, much more coarsely punctured, the median impunctate line of 

 clypeus poorly defined; antennal joints 5-10 obscurely brownish be- 

 neath, joint 3 slender, exceeding 4 plus 5; mesonotum much more 

 finely and sparsely punctured, the disk polished and subimpunctate, 

 mesopleura with scattered, coarse, shallow punctures ; striae at base 

 of metathorax longer, irregular, and sometimes indistinct; entire ab- 

 domen polished and its segments subimpunctate, except basally and 

 laterally where the punctures are small and sparse, segments 1-4 with 

 broad depressed testaceous margins ; legs black except yellow spots 

 on four anterior knees, tubercles black; median process of labrum 

 with its sides sinuate and its base crossed by numerous oblique striae, 

 its apex emarginate. 



Types: — Nebraska City, Nebraska, September 7, 1901, on 

 Helianthns annuus (M. A. Carriker, Jr.), $ ; do., September, 

 14, 1901, $ . 



Paratypes. — Type locality, September 14, 1901, on Helian- 

 thus (M. A. Carriker, Jr.), 1 $ ; do. on Grindelia squarrosa, 

 1 $ ; Lincoln, Nebraska, 1 9 ; West Point, Nebraska, Sep- 

 tember 2, 1900, on Helianthns (J. C. Crawford), 4 $ . 



The relationships of this species are practically identical 



