132 HYMENOPTERA ACULEATA. 



mesonotam anteriorly with four longitudinal impressed 

 lines, the central pair very close together, longer and deeper 

 than the lateral pair, wings with a slight cloud across the 

 marginal cell, basal area of the propodeum sharply defined, 

 surrounded by a wide crenate impression, its surface punc- 

 tured, finely sulcate down the middle, the sulcature con- 

 tinued beyond the crenate impression ; abdomen shining, 

 apical dorsal valve in the ^ scarcely punctured, in the ? 

 acuminate, carinated at the sides, with a trilobate apical 

 fovea ; anterior femora in the ^ fringed with long hairs 

 beneath, yellow in front, anterior tibiaB and tarsi, except a 

 black spot on the tibiae beneath, yellow in both sexes, inter- 

 mediate femora in the c? with a central yellow stripe, 

 posterior tibite narrowly yellow at the base, very clavate, 

 irregularly dentate. 

 L. 6 mm. 



Common in many localities, Chobham ; Hastings ; Brom- 

 ley ; Barnstaple. Wotton-under-Edge ; [Perkins) . Col- 

 chester; (Hnrwooil). Rugby; (Morice). Sidmouth ; 

 [Smith). Hazelgrove {B. Cooke). P. Smith says this 

 species provisions its cells with a small gnat. 



C. aphidum, Lej}. (Walkeri, SJiiu-k.). — Black, shining, 

 head and mesonotum punctured, mandibles, clypeus, a 

 line along the inner side of each eye above the clypeus, 

 and the scape of the antennae in front yellow ; thorax with 

 a spot on each side of the pronotum, tubercles, tegulee, 

 and a spot on the scutellum and postscutellum, often 

 wanting, especially in the c? ■, yellow, basal area of the pro- 

 podeum shining, enclosed and divided centrally by cre- 

 nate impressions ; abdomen subelliptic, finely punctured ; 

 anterior and intermediate legs in the ^J, except the base of 

 the femora above, the base of the posterior tibiae widely, 

 and the metatarsi, yellow ; the $ has the legs coloured as in 

 the (S but the anterior knees only are yellow, and there is a 

 black spot on the anterior and intermediate tibiee; posterior 

 tibiffi in the c? simple, not very clavate. 



