176 HYMENOPTERA ACULEATA. 



{G) 7. Sixth ventral Begment in the (J ess 

 shining, strongly and largely punc- 

 tured, the apical fringes of the other 

 segments entire ; $ with the abdomeu 

 less dull, basal segment naked exoept 

 at its extreme base .... picistigma. 



(5) 8. cJ with the sixth segment beneath simple, 

 ? with the thoracic hairs dull greyish 

 brown; abdomen somewhat shining . maroinaTA. 



(2) 9. Basal segment of abdomen finely and 



remotely punctured .... Daviesaka. 



(1) 10. Large species, 14-16, mm.; abdomen 

 with only very indistinct paler apical 

 bands cunicularia. 



C. SUCCincta, Linn. — (J black, subelongate, liead and 

 thorax densely clothed with pale-brown hairs, bead finely 

 punctured ; antenna with the basal joint clothed with long 

 hairs, joints of the flagellum distinctly longer than wide ; 

 mesonotum including the scutellum largely and deeply 

 punctured, propodeum rugose ; abdomen closely punctured 

 coarsely on the basal segment, which also, especially at the 

 base, is clothed with long pale hairs, each segment with 

 an apical band of pale pubescence, segments beneath some- 

 what shining, punctured, not depressed, apical pubescent 

 bands entire, fifth segment slightly emarginate, sixth with a 

 small deep subapical fovea on either side ; stipites of arma- 

 ture stout, bearing a narrow apical hairy process; sagittfe 

 wide at the base, each with a narrow membraneous wing at 

 the side which does not reach the apex ; tarsi with the 

 joints considerably longer than wide, clothed with a few 

 long hairs, and pale spines round the apex of each joint. 



? larger and more robust, and with the hairs of the head 

 and thorax rather brighter in colour than in the J' ; cheeks 

 between the eyes, and mandibles rather longer than in the 

 next species; abdomen slightly shining, basal segment 

 finely and closely punctured, clothed with long pale hairs 

 at its base, its apical margin generally pale, and clothed 

 laterally with pale hairs, the other segments more finely 

 punctured than the basal, each pale at the apex, and bearing 



