440 Dr. A. S. Packard, Jr's Revision of the 



Nysson laterale, Say, MS. 



N. laterale, Harr., Cat. Ins. Mass. p. 08. (1835). 



% . Dull black, coarsely punctured ; head not very convex in front, 

 vertex very coarsely punctured, with no hairs. Eyes slightly excavated, 

 front black; orbits and clypeus silvery pubescent; mandibles and pal- 

 pi black ; antennae clavate, sub-terminal joint much lengthened beneath 

 terminal joint long, pinched beneath ; a few hairs between the sutures, 

 and a silvery pubescence on the prominence between the insertion of the 

 antennas. Thorax dull black, very coarsely punctured in a specimen 

 from Virginia, except the yellow tubercle. Flanks prominently ridged 

 and very coarsely punctured ; propodeum with about twelve parallel 

 ridges on the sublunate enclosure, with transverse ridges between, 

 acutely produced as usual on the side; prominence, on which are coarse 

 parallel rugae, ending in a spine; posteriorly on the vertical face of the 

 propodeum are about six rugae, of which the two parallel mesial ones 

 are much larger, converging to the insertion of the abdomen. Tegulse 

 dark, wings smoky, veinlets blackish; legs uniformly and throughout 

 black, slightly sericeous. Abdomen thick and stout, coarsely punc- 

 tured, rings polished and smooth on the hind edge, six-spotted, a pair 

 of remote yellow spots on 1 — 3 rings; tip deep black. 



Length, .30 inch. 



Virginia, (Coll. Ent, Soc. Phil.). Dublin, N. H., (Leonard, Harr. 

 Coll.). Brunswick, Maine, (Packard). 



This species which I find recorded in Dr. Harris' MS. Catalogue of 

 his collection under the above name, in a letter from Mr. Say, can be 

 easily recognized by its dark dull-black body, the six-spotted abdomen 

 black legs, coarsely rugose propodeum, which has a much smaller 

 spine than in the two succeeding species. It is found apparently much 

 farther north than the others of its genus, and will probably be found 

 to be distributed through New England. 



Nysson aurinotus, Say. 



N. aurinotus, Say, Bost. Jour. Nat. Hist. i. p. 368. (1837). 



Smith, Cat. Hym. Br. Mus. iv. p. 336. (1856). 

 % . Front with a well marked prominence between the antennas, 

 golden pubescent; scape of antennae reddish, as on the basal joint of 

 the flagellum; remainder brown, terminal joint much pinched in, and 

 slenderer than in N. lateralis. Prothorax yellowish-red, extending to 

 the tubercle; meso-scutum very coarsely punctured; scutellum unusu- 

 ally square, nearly as long as broad, with a roundish, reddish-yellow spot; 

 base of propodeum with diverging angular rugae between the unusu- 

 ally large, lateral tubercle, which is tipped with reddisb ; posteriorly, 



