216 S. FRANK AARON. 



tions; punctured areas green : abdomen dark blue with strong purple and green 

 reflections. In other specimens the smoothed areas are dark blue with strong 

 purple reflections, the punctured areas green, and the abdomen as above. In 

 three specimens the smoothed areas are purple, in two of these the punctured 

 areas purple and blue, the other specimen purple only, and the abdomen all pur- 

 ple with slight green reflections. Another specimen has dark, blackish blue, 

 smoothed areas, punctured areas green, the abdomen black, with slight green re- 

 flections; third segment of abdomen tapering gradually towards its apex, the 

 snout-like projection strong, the margins bisinuate, the apical one deepest, a ridge 

 above the notch caused by its sides being suddenly bent downwards. The notch 

 in most of the specimens is broad, the sides divaricate, in others it is drawn more 

 closely together, appearing narrow and deep, with the sides almost or fully par- 

 allel ; the claws with two, three and four teeth, the basal ones smallest; 4-4.5 mm. 

 long. %. 9. 



Montana and Colorado ; sixteen specimens. The divarication of the 

 notch is most probably caused by the extension of the ovipositor, those 

 having the divaricate notch being mostly females. 



Elampiis Mtpecnliim. 



Hedijchrum speculum Say, Bost. Journ. i, 285, 1835. 



Elampus speculum Norton, Trans. Am. Ent. Soc. vii, p. 234. 

 One specimen from Illinois (Mr. Norton's type) ; emerald-green, with 

 some little purple and blue ; wings infuscated ; postscutellum conical, a 

 little produced ; margins of third segment bisinuate ; 4 mm. long ; three 

 teeth in the claw. % . 



UIPL.ORRHOS nov. gen. 



The single species forming this genus agrees with the description of 

 Elanipm, with the exception of the following diagnostic character : just 

 above the snout-like truncated projection of the apex of third segment 

 is a conical projection, forming the apex of a fold which extends on 

 each side just above the apical and lateral margins. 



Diplorrhos plicatlis n. sp. — Color in some specimens bright green, with 

 bluish and brassy reflections, and little, if any, purple ; darkest or nearly blue on 

 the occiput; other specimens dark blue with deep purple reflections, greenish on 

 the punctured areas, one specimen green, with dark blue reflections, and some 

 purple on the abdomen, and two others dark blue with purple and green, the dor- 

 sum of abdomen shining black, the sides green and blue with a little purple; 

 postscutellum as viewed laterally obtusely pointed and projecting a little poste- 

 riorly ; the depth of the arcuations on margin of third abdominal segment varies 

 in different specimens, as does also the distinct appearance of the submarginal 

 fold; truncation of the apex as viewed laterally slightly rounded at the end, the 

 notch very narrow, almost closed, the sides rounded, diverging; 2-3 teeth in the 

 claw ; 3.5-4.5 mm. long. o • 9 • 



Montana, Colorado ; nine specimens. 



