POMPILW.E. 75 



ventral valve in the ^ largely rounded and widely reflexed, 

 in tlie ? compressed and carinated ; legs testaceous red, 

 except the coxte and trochanters, the former generally 

 white spotted, femora black at the base, and sometimes the 

 posterior pair also at the apex, apex of posterior tibio3 

 and of all the tarsi dusky. 



L. 7-10 mm. 



Not common, but widely distributed, generally on JJm- 

 belliferce. Not recorded from Scotland. 



C. variegatus, Fab. — Differs from maculatus in having 

 the labrum white in both sexes, in the absence of the 

 large shallow thoracic punctures, in the interrupted pale 

 posterior band of the pronotum, and the red basal seg- 

 ments of the abdomen ; the second segment has a white 

 spot on each side at the apex, and the sixth a large 

 round central spot, apical ventral valve not widely reflexed 

 as in maculatiis. 



L. G-7 mm. 



Very rare; Chobham, $ Aug., 1876. Parley Copse, 

 Hants; {Bwld). Weybridge, ? Aug., 1844; J Aug., 1845; 

 (Smith). Weybridge, 1854; (Grant). 



DIVISION II. 



SPHEGIDJE. 



I have followed Kohl in considering all the sand wasps 

 with short prothoraces as belonging to one great family. 

 Our British sand wasps are capable of being arranged 

 tolerably clearly in well-defined groups, but when the exotic 

 species are considered as well, these definitions break down, 

 and there appears to be no better way than to unite them 

 as Kohl has done. The divisional character (see ante, 

 p. 43) is sufficient to distinguish the family, but it contains 

 two very distinct sections, viz. one in which the petiole of 

 the abdomen is entirely formed of the ventral plate of the 

 segment, the other in which both ventral and dorsal plates 



