T. D. A. COCKERELL. 147 



arciialiiN 9- argeinoniw 9- 



Base of metathorax sliiiiin>;, with large, Base of metathorax moderately shining, 

 irregular, longitudinal wrinkles. but minutely granular, with very 



fine, small, longitudinal wrinkles 

 not reaching the hind edge of the 

 enclosure. 

 Parapsidal grooves wanting. Parapsidal grooves distinct. 



Punctures of abdomen a little smaller. 

 Hind margins of abdominal segments Hind margins of abdominal segments 

 very narrowly, but perceptibly not noti(;eably testaceous, 



testaceous. 



Race argemon.ls differs from H. pseudopectoralis by its much 

 broader face, dull yellowish stigma, continuous narrow hair-band at 

 base of second abdominal segment, etc. 



Hab. — Paso de Telaya, Vera Cruz, March 29, on flowers of Arge- 

 moiie mexicana (C. H. T. Townsend). 



(7.) Paunrgiis liistraiiS'- n. sp. 9. — Length 8 mm., black, with short, 

 thin, mouse-gray (or rather more brownish) pubescence, not concealing the shiny 

 surface. Head nearly circular, face not particularly broad, thinly pubescent all 

 over; face and clypeus quite closely and strongly punctured, lower edge of cly- 

 peus with a fringe of pale reddish or orange shining hairs; mandibles dark, only 

 in the slightest degree rufescent at the broad tips, which are more or less notched ; 

 maxillary palpi 6-jointed, the joints after the first siibequal, but the third con- 

 spicuously shorter than the second ; labial palpi 4-jointed, first joint not so long 

 as the last three together, the last three about equal in length ; glossa not very 

 long, acutely pointed, notched at sides; antennse rather short, scape long, funicle 

 unusually large, flagellum short, obscure brownish beneath towards tip, .second 

 and third joints very short; mesothorax moderately shining, but microscopically 

 tessellate, with sparse, small punctures; scutellum with rather close, but feeble 

 punctures; postscutellum pubescent; metathorax thinly pubescent with conspicu- 

 ously plumose hairs, except the basal enclosure, which is roughened, and longi- 

 tudinally wrinkled at base; it is not bounded by a raised rim; tegula? shining 

 dark brown, with a subhyaline spot. Wings hyaline, nervures and stigma pale 

 brown, costal nervure black; stigma large; second recurrent nervure with its 

 upper two-thirds bowed outwardly; basal nervure strongly bent; tibiaj and tai'si 

 with whitish pubescence ; hind femora with long, thin scopa on basal two-thirds, 

 which collects pollen quite as much as the tibial scopa. which is not very long, 

 but conspicuously plumose ; claws cleft. Abdomen shaped like that of an Haliciux, 

 shiny, finely punctured, base and sides of first segment, sides of second, and 

 whole dorsum of third, fourth and fifth segments with sparse, pale grayish i)u- 

 bescence; when the abdomen is a little extended the articulating base of fourth 

 segment is exposed and forms a shiny naked band ; apex roundedly truncate; 

 ventral segments with thin bands of rather long whitish hairs. 



Hab. — Mr. Clark Rodger's ranch. Lone Mountain, near Silver 



* Prof. Vj. O. Wooton has identified the flower visited by Paniirgus Instrans as 

 Pyrrhopappns, probably P. rothrockii Gray, [lossibly new.— T. D. A. C. 



TRANS. AM. ENT. SOC. XXIV. JUNE, 1897. 



