1897.] NATURAL SCIENCES OF PHILADELPHIA. 139 



wings fuliginous, marginal cell only a little shorter than the first 

 submarginal, obliquely truncate ; second submarginal narrowed above 

 nearly to a point ; legs tolerably spiny, first joint of anterior tarsus 

 with four long spines ; tibial spurs black ; abdomen microscopically 

 tessellate, with a very few scattered punctures on the third to the 

 fifth segments, pygidial area minutely granular, about one-third 

 longer than broad. 



Hab. — On Bigelovia ivrightii, close to the Agricultural College, 

 Mesilla Valley, New Mexico, Sept. 11, 1895 (Ckll., 4,951). Differs 

 from A. nigropilosus by the sculpture of the middle segment, which 

 is not obviously reticulate. A specimen of true nigropilosus (re- 

 cognized as such by Mr. Fox) was taken on the campus of the Agri- 

 cultural College on Oct. 31. 



Gorytes bigeloviae n. sp. 



S . — Length about 10 mm., anterior wing 7 mm., rather slender, 

 black ; occiput, sides of face, cheeks, thorax, especially sides and 

 hind end, and abdomen, especially on dorsal segments three and 

 four, hoary from a minute silvery pile ; antennse, clypeus, mandibles 

 and anterior legs, orange-rufous, bright in color except the antennas, 

 which are dusky-brown above ; middle femora and tibiae obscurely 

 brownish beneath ; a narrow line along inner orbits, hind margin of 

 prothorax, tubercles and a mark behind them, obscure spot on tegulse, 

 spot above base of wings, broad band on scutellum, line on postscu- 

 tellum, and elongate patch on each side (margin) of middle segment, 

 apical bands on dorsal segments 1 to 5, broad on 1, becoming suc- 

 cessively narrower, and a broad interrupted band on the second 

 ventral segment, all creamy-white. Eyes very little converging 

 below, front strongly but rather sparsely punctured, clypeus some- 

 what convex, scape with an obscure yellow stripe in front, first joint 

 of flagellum only a little longer than second ; mesothorax with very 

 large, not particularly close punctures ; tegulae testaceous, with a 

 whitish spot ; scutellum sparsely punctured ; triangular basal area 

 of middle segment very strongly longitudinally furrowed, the re- 

 maining portion obscurely subcancellate ; wings hyaline, the mar- 

 ginal cell and a little beneath it fuliginous, nervures piceous, as also 

 the scigma, marginal cell shorter than in some species ; tibiae and 

 tarsi with only the minutest spines ; abdomen slender, first segment 

 shaped something like the head of a vulture, strongly bulging at end, 

 its suture with the second, viewed from the side, a little less than a 

 right angle ; first two segments with large rather sparse punctures, 



