British Hymenoptera. 193 



in the centre ; apex of each segment with a triangular lateral spot 

 of pale pubescence ; 5th segment above with a slightly prominent 

 lateral angle ; 6th with a rather long lateral basal spine, apex with 

 two blunt teeth above, which are produced below mto two longer 

 sharp spine-like teeth ; beneath strongly punctured, the punctura- 

 tion of each succeeding segment finer than that of its predecessor ; 

 each segment at the apex with a lateral patch of white hairs ; 4th 

 segment bidentate at the apex ; 6th at the apex with a corneous, 

 rounded, central lobe (for genitalia see PI. VIII., fig. 7). Legs 

 clothed with short whitish hairs ; outer calcar of posterior tibiae 

 blunt. 



2 • Like the <^ , but with the pubescence of the face shorter ; 

 the abdomen in the shape of an elongate ti-iangle ; segments 

 sculptured and spotted at the sides, as in the ^ ; 6th segment 

 finely punctured, narrowed to the apex, which is somewhat 

 rounded, its centre with a longitudinal raised hne, and each side 

 with a carina running parallel to its margin ; beneath with the 5th 

 segment very finely punctured and clothed with a fine brownish 

 pubescence near its apex; 6th widely lanceolate, with a slight 

 indication of a constriction near the apex. Length, 13 — 15 mm. 



Hab. Isle of Wight, Sandown, flowers of bramble; 

 Shirley ; Wimbledon ; Lowestoft ; Morthoe, N. Devon. 



Easily recognised by the spots of the abdomen, and 

 the blunt spine on the tibise. 



2. Coelioxys quadridentata, Linn. (PL VIIL, fig. 4). 



Linn., Syst. Nat., ed. x., i., p. 577; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 141. 



Black, rugosely punctured ; abdominal segments with entire 

 bands of pale pubescence ; 6th segment of the ^ armed with six 

 teeth, arranged as in vectis, but the upper pair of apical ones 

 sharper and more spiniform ; 5th segment not spinose at the apex 

 laterally; 2 with the 6th ventral segment elongate-lanceolate, 

 constricted before the apex ; calcaria sharp in both sexes. 



(J . Head and thorax, in fresh specimens, densely clothed with 

 golden brown hairs, largely and rugosely punctured ; wings clouded ; 

 scutellum with a tooth on each side. Abdomen subconical, largely 

 punctured; 1st segment clothed with long golden brown hairs; 

 2nd segment widely impressed across the middle, and clothed at 

 the apex with a fringe of golden brown hairs ; 3rd, 4th, and 5th 

 segments like the 2nd, but less impressed ; 5th without a lateral 

 spine or tooth at the apex ; 6th with a narrow spiniform tooth on 

 each side at the base, and with two apical processes, each of which, 



