British Hymenoptera. 18S 



1. Colletes succincta, Linn. 



Linn., Syst. Nat., ed. x., vol. i., p. 576 ; Smith, Cat. 

 Brit. Hym., 2nd ed., p. 3. 



Head and thorax clothed with pale brownish hairs, paler 

 under the wings and underneath the head. Abdomen 

 black ; $ with a pale ochreous band at the apex of each 

 of the first six segments ; ? with the apex of each seg- 

 ment narrowly testaceous, and with a narrow whitish 

 band. Legs with pale hairs. 



^. Subelongate; head finely punctured. Antennse with 

 the basal joint covered with long hairs ; each joint of the 

 flagellum distinctly longer than wide ; mesothorax and 

 scutellum largely and deeply punctured ; metathorax 

 rugose. Abdomen closely punctured, coarsely on the 

 basal segment, finely on the rest ; the basal segment 

 also clothed with long pale hairs, especially at its base. 

 Beneath rather shining and punctured, the segments not 

 depressed, the pubescent bands at the apex of each 

 entire ; the 5th segment slightly emarginate; the 6tli 

 with a small deep transverse fovea on each side. Tarsi 

 with the joints considerably longer than wide, clothed 

 with a few long hairs and pale spines round the apex of 

 each joint. Genitalia with the stipites stout, and bear- 

 ing a narrow hairy appendage at the apex. Sagittas 

 wide at the base and converging to the apex, with a 

 narrow membranous wing-like appendage near the apex ; 

 (see pi. vii., fig. 14). 



? . Larger and more robust than the 3^ . Head and 

 thorax clothed much the same as in that sex, but the 

 clypeus less densely ; cheeks between the eyes and the 

 mandibles slightly longer than in the following species. 

 Abdomen more or less shining ; basal segment finely 

 and closely punctured ; the 2nd and following still more 

 finely ; each segment bears at the apex a narrow band 

 of whitish hairs, and the basal segment is clothed with 

 long pale hairs at the base. Length 9 — 11 mm. 



Hah. Generally distributed and often common. 



2. Colletes fodiens, Kirb. 



Kirb., Mon. Ap. Angi. ii., p. 34, pi. xv., fig. 1 ; Smith, 

 Cat. Brit. Hym., 2nd ed., p. 4. 



Very like the preceding, but differs in having the 

 antennsB of the ^ shorter ; the Gth ventral segment of the 



