Mr. F. Walker on some British Chalcidites. 19 



Eurytoma Argele, mas et fern. Atra, convexa, vix gibbosa, anten- 

 nis pedibusque nigris, genubus tarsis protibiisque rufis, alls limpi- 

 dis, nervisfuscis. (Corp. long. lin. 1^; alar. lin. 2£.) 



Male. — Body convex : head and thorax roughly punctured : head 

 a little broader than the thorax : antennse setaceous, nodose, verti- 

 cillate-pilose, as long as the thorax ; first joint long, slender ; second 

 cyathiform ; third and fourth very minute ; fifth and following joints 

 subquadrate, dilated, successively decreasing in size, each having a 

 narrow stem about half its length : thorax nearly obconic, less con- 

 vex than that of verticillata, Serratulce, rufipes, tumida and platy- 

 ptera : prothorax quadrate, a little narrower than the head ; its breadth 

 rather more than twice its length : scutum large, broader than long ; 

 sutures of the parapsides very distinct, approaching each other ; par- 

 aptera large, triangular, separated by a space nearly equal to the 

 scutum between the base of the parapsides ; scutellum nearly conical, 

 truncate in front, less decumbent behind than that of verticillata, 

 Serratulae, curta, annulipes, rufipes, Scultenna, Sittace, tumida, fumi- 

 pennis, platyptera and Abrotani : metathorax very short, appearing 

 transversely behind the scutellum : propodeon large, obconic, more 

 horizontal than that of verticillata, Serratulce, curta, Abrotani, annu- 

 lipes, rufipes, Scultenna and Sittace, having only one broad shallow 

 channel along the middle : podeon slender, cylindrical, punctured, 

 longer than the propodeon : abdomen very short, smooth, shining, 

 not much more than half the length of the thorax, abruptly decum- 

 bent in front and near the tip ; its length slightly exceeds its height ; 

 metapodeon less than one-fourth of the length of the abdomen, ha- 

 ving a short longitudinal channel at the base ; octoon of moderate 

 size, nearly as long as the metapodeon ; ennaton very large ; decaton 

 small ; protelum, paratelum and telum very short : wings broad ; 

 humerus much less than half the length of the wing ; ulna less than 

 half the length of the humerus, more slender than the ulna of verti- 

 cillata, Serratulce, curta, Abrotani, annulipes, rufipes, Micipsa, bre- 

 vicollis and nitida ; radius as long as the ulna ; cubitus nearly as 

 long as the ulna ; stigma small, emitting a short branch. 



Female. — Head as broad as the thorax : antennae slightly clavate, 

 shorter than the thorax ; first joint long, slender ; second cyathi- 

 form ; third and fourth very minute ; fifth and following joints to 

 the ninth long but successively shorter; club fusiform, twice the 

 length of the ninth joint : podeon much shorter than the propodeon: 

 abdomen smooth, shining, slightly compressed, gradually decumbent 

 towards the base and towards the tip, somewhat shorter than the 

 thorax ; its height more than half its length ; segments not much 

 contracted beneath ; metapodeon rather large ; octoon and ennaton 

 of moderate size ; decaton large above, short beneath ; protelum, 

 paratelum and telum very short : oviduct concealed. 



Eurytoma Sittace, fem. Atra, convexa, vix gibbosa, antennis pedi- 

 busque nigris, tibiis fuscis, genubus tarsis et protibiis rufis, alis 

 - limpidis, nervis fulvis . (Corp. long. lin. 1 ; alar. lin. 2^.) 

 Body convex : head and thorax roughly punctured : head as broad 



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