88 ENTOMOLOGICAL NEWS. [March, 



punctured, the latter distinctly impressed; enclosure of metathorax nearly 

 as broad at the base as it is long, and with numerous strong, radiating 

 ridges; outside of this enclosure the metathorax is coarsely rugose, except 

 on the metapleurae ; abdomen shining, the first two dorsal segments 

 scarcely punctured. Length 7 mm. 



cf . Antennae beneath, four hind tibiae and tarsi in front and the parts 

 mentioned in the description of the 9, yellow; wings subhyaline; first 

 joint of flagellum decidedly shorter than the second, which is in turn 

 slightly shorter than the third, last joint curved. Length 7 mm. 



Nevada, Colorado. The form and sculpture of the enclosure 

 of metanotum will distinguish it. 



4. Alyson conicus Prov. 



A. conicus Prov., 1. c. p. 271, $. 



cf . Black; inner orbits as far as centre of front, scape and pedicellum 

 beneath, mandibles except tips, clypeus, except spot in middle (some" 

 times the clypeus is entirely black), apex of anterior coxse, as well as the 

 fore femora and tibiae in front, yellow; four posterior tibiae, tarsi and apex 

 of femora testaceous; flagellum beneath obscurely testaceous; wings sub- 

 hyaline, iridescent, nervures and stigma testaceous; first joint of flagel- 

 lum but little more than half as long as the second, which is in turn 

 slightly shorter than the third; front finely and closely punctured, strongly 

 impressed medially ; scutellum impressed ; metathorax bluish, the en- 

 closure shorter than in the 9 ; abdomen shining, first two dorsal segments 

 impunctate. Length 5.5 mm. 



Canada. One $ specimen has the flagellum yellowish be- 

 neath. 



5. Alyson guignardii Prov. 



A. guignardii Prov., 1. c. p. 271, ?(j\ 

 Canada; Illinois. 



6. Alyson striatus n. sp. 



tf. Black; scape beneath, clypeus entirely, sides of face, inner orbits 

 as far as centre of front, mandibles except tips, two spots on prothorax 

 above and apical portion of anterior coxae, yellow; legs yellow-testaceous, 

 or pale-yellow, flagellum brownish beneath; maculae on second segment 

 white, transversely elongate; wings subhyaline, iridescent, nervures testa- 

 ceous; the head, thorax and abdomen is clothed with a rather conspicu- 

 ous, oppressed pubescence. Anterior margin of clypeus slightly incurved ; 

 front finely and closely punctured, strongly impressed medially; first joint 

 of flagellum but little more than half as long as the second, this latter 

 joint fully as long or slightly longer than the third; last joint curved as 

 usual; dorsulum and scutellum with tolerably fine and close punctures, 

 the scutellum not impressed; enclosure on metanotum triangular, with a 

 strong transverse ridge before the apex, which gives it the appearance of 

 being semiellipliY, within the enclosure there are two strong, longitudi- 



