ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 307 



Head transversely bi'oad, always lenticular, the scrobes short, the punctures large, thimble-like ; hind 

 wings with the costal cell usually extending to the booklets. 



Marginal vein rarely short, at least longer than thick, and usually much longer ; mesonotum 



smooth, impunctate, or at most shagreened 68 



Marginal vein very short, punctiform, not or scarcely longer than thick ; mesonotum punctate. 

 Mesonotum with the punctuation unlike that of the head, the punctures less denSe and 



the surface finely coriaceous ; postmargiual and stigmal veins short, subequal 67 



Mesonotum with the punctuation similar to that of the head ; postmarginal vein very short 

 or subobsolete (rarely long), Ihe stigmal vein long. 



Scape normal, without a leaf-like expansion beneath. 

 Punctures on head and thorax coarse and dense. 



Mesonotum very short, only about half the length of the scutellum ; post- 

 marginal vein usually as long as the stigmal ; flagellum long, with long 



sparse hairs, not arranged in half whorls Chalcaspis Howard. 



Mesonotum at least as long as the scutellum or very nearly ; postmarginal 

 vein much shorter than the stigmal ; flagellum with funicle joints sub- 

 excised at apex, with half whorls of long hairs. 



Bothriothorax Eatzeburg. 



Punctures on head and thorax small and less dense ; mesonotum a little 



longer than the scutellum Aratus Howard. 



67. Vertex and face broad, finely shagreened, and sparsely punctate ; scrobes deep, semicircular. 



Pedicel obconical, longer than thick at apex, the flagellum subclavate, the joints, after the first, 



wider than long Pentelicus Howard. 



Pedicel very minute, the flagellum filiform, pilose, the joints subequate, about two and one half 



times as long as thick .Blepyrus Howard. 



Vertex and face very narrow, or not broad. 



Head with coarse thimble-like punctures, the thorax smooth, impunctate ; flagellum short, 

 thick, filiform, clothed with a dense short pubescence, the joints wider than long. 



.ffinasius Walker. 

 Head smooth without coarse thimble-like punctures, at the most with some sparse punctures 

 on the vertex ; fiagellum long, subclavate, not thick and only sparsely pubescent. 



Euryrhopalus Howard. 



68. Marginal vein rather long, rarely shorter than the stigmal 69 



Marginal vein rarely more than twice as long as thick ; head with rather sparse, scattered, umbilicate 



punctures, the scutellum a little longer than the mesonotum. 



■ Head not wider than the thorax between the wings ; flagellum not short, filiform, and clothed 

 with rather short sparse hairs, the funicle joints longer than wide, the first a little the longest. 



Hemencyrtus Ashmead. 

 Head wider than the thorax between the wings ; flagellum short, strongly clavate, as in the 

 female ; the club large and longer than the funicle, the joints of the latter minute, annular. 



Coccophoctonus Ashmead. 



69. Mesonotum as long as the scutellum or nearly, rarely somewhat shorter, the surface finely shagreened, 



at most with some feebly defined sparse punctures ; marginal vein shorter than the stigmal, the lat- 

 ter not very short ; flagellum filiform, pilose, the funicle joints about twice as long as thick ; eyes 

 bare Phsenodiscus Forster. 



