86 HYMENOPTERA ACULEATA. 



sides towards the body clothed with shining sericeous 

 pubescence. 



L. 8-12 ram. 



Very common and generally distributed ; appears in May 

 and Jane. 



T. clavicerum, Lep. — Smaller than figuhis, face con- 

 vex between the eyes, clypens bidentate in the centre, 

 antenniB distinctly clavate, apical joint in the ^ not acumi- 

 nate ; tegulte pale ; anterior tibice entirely pale or pale only 

 in front, all the knees pale. 



L. 6-8 mm. 



Common and generally distributed. 



T. attenuatum, Smith. — Much narrower and more 

 elongate than either of the preceding and distinguishable at 

 once by the long thin basal segment of the abdomen, which 

 is twice as long as the second. In colour and in the form 

 of the antennse it more resembles jigulus, but the apical 

 joint is longer in the S of this species, being equal 

 to the four preceding together ; the puncturation of 

 the mesonotum is much finer, and the form of the abdo- 

 men much more elongate, each segment being longer than 

 wide. 



L. 8-9 mm. 



Not rare ; it may be bred from bramble stems. Chobham ; 

 "Woking ; Reigate. Bristol ; {Smith) . Near Hastings ; 

 [Fri.'iby). Bickleigh ; Exminster ; [Bignell). Norfolk; 

 (Bridgman) . Gloucestershire ; {V. R. Perkins) . 



AMMOPHILA, Eirb. 



Distinct from our other Sjilicgidx by the long round 

 petiole of the abdomen ; this is composed only of the lower 

 plate of the first abdominal segment. Head rather large, 

 mandibles not sinuate on their lower margin, tongue elon- 

 gate and bifid ; eyes entire, ocelli round and rather close 

 together ; pronotum rather elongate, convex, separated from 



