igS HYMENOPTERA ACULEATA. 



cell, the les3 smoky wings, the reticulated (not strigose) 

 sides of the propodeura, the wider glabrous area of the 

 dorsal valve of the abdomen, and the much more finely 

 punctured, grey pubescent fourth segment ; the black of 

 the apex also does not extend on to the third segment, as is 

 usually the case in (jibbus. 



L. 7-9 mm. 



Woking and Chobham, rare. I know of no other 

 localities. I am inclined to think that it associates with. 

 Hdlictus j^ra.tinus, Sm. 



S. subquadratus, Smith. — Like the preceding in colour, 

 but rather larger, both sexes may be distinguished by the 

 wider second submarginal cell ; the J' may be further 

 known by the short bifid lacinia of the armature, and the ? 

 by the incrassate vertex, the strigose sides of the pro- 

 podeum, the wide flat glabrous area of the dorsal valve, and 

 the pale tibial spines. 



L. 8-10 mm. 



Very common and generally distributed. 



S. SpinuloSUS, v. Hag. — S larger than any of the pre- 

 ceding and its antenniB shorter, the third joint of the flagel- 

 Inm scarcely longer than the first and second together; 

 mesonotum closely punctured and clothed with grey hairs, 

 wings with the second submarginal as wide at the base as 

 long, alar hooks ten ; abdomen coarsely punctured, wider 

 than in any of the preceding, armature with the lacinia 

 short and simply pointed with a membranous wing pro- 

 duced along the inner margin of the stipes, tibiae with fine 

 pale spines on their outer edge. 



? with the mesonotum closely punctured, clothed with 

 short grey hairs, alar hooks 9-10, wings dark smoky brown ; 

 abdomen with the first three segments entirely and the 

 sides of the fourth, red, glabrous area of dorsal valve 

 narrowed to the apex. 



L. 11-12 mm. 



Eare. Gloucestershire ;( F. B. Teilans), Wiltshire, in 



