292 [April 



body, and the abdomen more depressed, less broad, and obtusely rounded 

 at tip. 



Fourteen 9 > three % specimens. 



Genus HELCON, Nees. 

 1. Kelcon occidentalis. n. sp. 



Black, polished: legs dull honey-yellow, posterior tibiae and tarsi blackish, 

 their femora beneath with a stout, obtuse spine ; wings hyaline. 



Male. — Black, polished ; head delicately punctured, finely pubescent; 

 face opaque, very closely punctured ; between the insertion of the an- 

 tenna) a very prominent acute carina ; labrum fringed with yellowish 

 pubescence; palpi testaceous ; antennae three-fourths the length of the 

 body, slender, curled at tips, entirely piceous-black, somewhat paler at 

 base. Thorax finely pubescent, shining ; prothorax irregularly rugose, 

 subopaque; pleura somewhat rugose, with a smooth polished space on 

 each side beneath the wings ; ruesothorax smooth and polished, trilo- 

 bate, the middle lobe very prominent, convex ; scutellum depressed, 

 obtuse at tip, closely punctured, with a deep transverse excavation in 

 front, divided in the centre by a sharp carina ; the spaces on each side 

 of the scutellum, striated ; metatborax coarsely rugose, subopaque, on 

 the basal middle a shallow longitudinal channel bounded on either side 

 by a well-defined carina slightly diverging posteriorly; tegulae houey- 

 yellow. Wings hyaline, very faintly tinged with dusky, slightly iride- 

 scent ; nervures and stigma black, the former yellowish at base. Legs, 

 including the coxa3, dull honey-yellow, the posterior pair stoutest and 

 darkest; tips of the posterior coxae, upper and lower margins of their 

 femora, their tibiae entirely, and most of their tarsi, blackish, their 

 femora with a stout, obtuse tooth beneath towards the tip. Abdomen 

 subsessile, depressed at base, deep black, polished ; first and second 

 segments obsoletely sculptured, the former gradually broader at tip, the 

 second segment with a broad, shallow, oblique depression on each side 

 at base; remaining segments subconvex, smooth and polished; venter 

 subcompressed. Length 6i lines; expanse of wings Hi lines. 



One specimen. 



2. Helcon fulvipes, n. sp. 



Black, polished ; wings fuliginous ; legs fulvo-ferruginous ; ovipositor as long 

 as the body. 



Female. — Head as in the preceding species, except that the face is 

 subrugose, and the palpi dusky testaceous; antennae as long as the body, 

 entirely black. Thorax much as in the preceding species, but the ru- 

 gosity of the prothorax and pleura is more dense ; the middle lobe of 

 the mesothorax is prominent and convex, the groove on each side is 



