NORTH AMERICAN HYMENOPTERA. 219 



punctures on the abdomen less confluent and more distinct, and the 

 roughened surface less marked than the Dakota specimen. The Mon- 

 tana specimen with the apical projection a little less pronounced than the 

 type ; 5-5.5 mm. long. 



IVotozuM viridicyaneiis. 



Elanipas viridicyaneus Norton, Trans. Am. Ent. See. vii, 235, 1879. 



Elampus coruacams (Norton) Provancher, Nat. Can. xii, p. 303. 



Elampus spinosua Pi'ovancher, ibid, p. 302, 1881. 

 Four specimens from the localities : Massachusetts (type), Colorado and 

 Montana, and two specimens in the collection of M. Provancher from 

 Canada, the type of spinosns, and the specimen determined as Omalus co- 

 rusanis Norton. The color is green, purple and blue, about equally 

 distributed, except in the Colorado specimen, which has less green and 

 more blue. Punctures on occiput pro- and mesothorax rather sparse 

 and subeven, but in one Montana specimen the punctures are close and 

 regular. The apical projection of the third segment is short, large, semi- 

 circular, the closing membrane black. Spinosus, of Provancher, does 

 not diflPer, it is not so large as the specimen from Colorado, the continua- 

 tion of the metallic color upon the tarsi and antennae is a variable char- 

 acter and of no importance, and the spine beneath and at the apex of 

 the tibia is present in all the species ; 3 and 4 teeth within the claw ; 

 5.5-6 mm. long. 



Kotoziis marginatum Pattou, Can. Ent. xi, p. 66, 1879. 



Elampus viridis (Cresson) Provancher, Nat. Can. xii. p. 303. 



Twenty specimens in the collection from the following localities : — 

 Canada, New Hampshire, Montana, Washington Territory, British Co- 

 lumbia, Colorado and California ; also three specimens in Provancher's 

 collection determined as viridis Cresson. Specimens vary wonderfully 

 in color from emerald-green with golden reflections and bright blue with 

 purple reflections to deep dull black with very little purple ; apical closing 

 membrane black ; 3.5—5 mm. long. 



IVotoziis productus n. sp. — Long and slender: bright emerald-green with 

 blue and some purple reflections, duller on the postscutellum ; occiput pro- and 

 mesothorax rather sparsely but somewhat evenly punctured ; abdominal punc- 

 tures very close or confluent, so as to cause the surface to appear roughened; ab- 

 domen lengthened, longer than in the other species, the third segment evenly 

 tapering, comparatively less so than in other species; apical projection large, even, 

 semi -circular, the closing membrane deep brown or fuscous: wings subhyaline, 

 fumate on the apical half, 3 teeth in the tarsal claw; 5-5.5 mm. long, f • 



Montana ; five specimens. 



