626 ENTOMOLOGICAL NEWS. [December, 



the metathorax has a distinct median carina, with the spiracles moder- 

 ately large and rounded. The marginal cell in the front wings is very 

 large and extends clear to the tip of the wing, while the submedian cell is 

 a little longer than the median, and the second discoidal cell is open at 

 apex below. 



Hab. — Chatham Island. 

 Described from i 9 specimen. 



Family LXXVIII, BRACONID.^. 

 Among the material from Chatham Island, I find a new 

 Braconid genus represented by three distinct species. Its posi- 

 tion and distinctive characters may be best shown by repro- 

 ducing from my forthcoming monograph on the North Ameri- 

 can Braconidae, my generic table of the group to which it 

 belongs. 



Subfamily VI, Helconin^. 



Tribe I, Helconini. 



TABLE OF GENERA. 



Abdomen attached to the metathorax far above the hind coxae . \. 

 Abdomen attached normally. 



Hind femora beneath unartned 2. 



Hind femora beneath armed with one or more teeth. 



Hind femora armed with many small teeth beneath ; recurrent nerv- 

 ure joining the second cubital cell (Sarawac). 



( r ) Euscelinns Westw. 

 Hind femora armed with one tooth beneath ; recurrent nervure join- 

 ing the first cubital cell .... (2) Helcon Nees.* 



2. Recurrent nervure joining the first cubital cell. 



Second cubital cell not longer than wide, usually ivider than long ; 



clypeus at apex rounded 3. 



Second cubital cell always longer than wide; clypeus at apex truncate. 

 Basal joint of hind tarsi not longer than joints 2-4 united ; medlar* 

 cell in hind wings not or scarcely shorter than the costal cell. 



(3) GymnoBcelis Forst. 



Basal joint of hind tarsi longer than joints 24 united ; median cell 



in hind wings much shorter than the costal cell . (4) Eumacro- 



centrns Ashm., n. g. (type H. americanus Cr.). 



3, Submedian and median cells in front wings of an ecjual length ; second 



cubital cell petiolate, not longer along the radius than along 

 the cubitus, if anything a little shorter . (5) Aspicolpng VVesm. 



* Mr. Peter C«ineron has recently recliriitcnc<l tlili well-known genus under tlic name 

 IVroMgklonl; vidt Mem. and Proc. Manchester Lit. and Phil. Soc, vol. 43, 1899, p. s6. 



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