178 HYMENOPTERA ACULEATA. 



fasciae, the sixth largely punctured, and widely impressed 

 apically at each side, and by the stipites of the armature 

 which are considerably shorter than the sagittse; the ? 

 from both succincta Sini fodiens in the coal-black colour of 

 the abdomen, this is dull, with close subrugosepuncturation 

 and concolorous margins like fodiens, from which it difiers 

 in the wider more cordate form of the abdomen, the larger 

 deeper puncturation of the basal segment, the absence of 

 long pale hairs on its basal half, and in the white colour of 

 the bands. 



L. 9-10 mm. 



July and August; Southwold ; Hastings; Falmouth. 

 Chewton, Hants, on Chamomile flowers ; {S. 8. Saunders). 

 Norwich; (Bridgman). Lowestoft; {Morice). 



C. marginata, Smith (halteata Nyl., Thorns. — Smaller 

 than any of the preceding, S with the ventral segments 

 convex, punctured, their fascias entire, sixth without lateral 

 depressions, armature with the sagittae produced at each 

 side into a curved wing, and a strong angular tooth nearer 

 the base. 



? with the thoracic hairs of a duller brown than in any of 

 the preceding, clypeus and face less hairy ; abdomen slightly 

 shining, first segment largely and rugosely punctured, 

 clothed with scattered pale hairs at the base, second with a 

 wide basal band, composed of hairs of the ordinary type with 

 short lateral branches, whereas the corresponding band in 

 fodiens and picistigma, when present, is made up of short 

 vei-y thick somewhat scale-like hairs. 



L. 8-9 mm. 



July and August ; Deal, on Dutch clover ; Bembridge, 

 Isle of Wight. Seaton ; {Bignell). Littlehampton ; York- 

 shire; Cumberland; {Smith). Wallasey; (Gardner). Wey- 

 bridge; {Marshall). 



C. Daviesana, Smith. — Differs from all the preceding 

 by the shining surface of the abdomen, and the much finer, 

 sparser, punctui'ation of its basal segment. Otherwise in its 



