THE CANADIAN ENTOMOLOGIST 345 



Strongly converging below; antennae very long, the rather swollen 

 scape black; the flagellum ferruginous, dusky above, strongly 

 crenulate; front, sides of thorax and metathorax blue-green, but 

 face, mesothorax and scutellum yellowish green; mesothorax finely 

 punctured but moderately shining ; area of metathorax with radiat- 

 ing plicae, more or less connected by cross-ridges; tegulae pale 

 testaceous; wings ample, hyaline, stigma and nervures sepia; first 

 recurrent nervure joining second submarginal cell very near end; 

 tibiae and tarsi, and much of apical part of femora, bright ferru- 

 ginous, but femora otherwise green; abdomen clavate, long and 

 slender, first segment swollen dorsally; first segment practically 

 black above, second and third very bright ferruginous, fourth and 

 fifth deep metallic green with hind margin red, apex red. 



Chile (E. C. Reed), U. S. Nat. Museum. Easily known by the 

 peculiarly coloured abdomen, but nearest to R. corinogaster 

 (Spinola). . 



Rhopalictus melanocladus, sp. n. 



cf. — ^Length about 8.5 mm.; head and thorax black, with 

 white hair, the entirely dull and granular front, vertex, meso- 

 thorax and scutellum with a faint greenish tint; clypeus and 

 labrum black, mandibles dark reddish beyond middle; eyes deeply 

 marginate and strongly converging below; antennae extremely 

 long, black, the flagellum dark coffee-colour below, and strongly 

 crenulate; area of metathorax strongly reticulate; tegulae dark 

 rufo-fuscous; wings brownish-hyaline, stigma and nervures dusky- 

 ferruginous; second submarginal cell not very broad, receiving 

 first recurrent nervure a short distance from its end; legs black, 

 with the long tarsi; pale ferruginous; abdomen elongate, clavate, 

 first segment swollen dorsally, but its apical part in a straight line 

 with second (which is not true of R. callicladiiriis) ; abdomen 

 black, with a very faint greenish tint, hind margins of segments 

 obscurely reddish; apex pale ferruginous. 



Chile (£. C. Reed), U. S. National Museum. Related to R. 

 chilensis (Spin.), the type of the genus, but readily distinguished 

 by the dark abdomen and the shape of the second submarginal 

 cell. 



