Insects. 1445 



Description of the British species of Bees belonging to the genera 

 Chelostoma, Heriades, Ceratina, Eucera, Panurgus, and Anthi- 

 diam ; with Observations on their Economy, fyc. By Frederick 

 Smith, Esq. 



Genus. — Chelostoma, Latreille, St. Fargeau. 

 Apis, Linnaeus. HyUeus, Fabricius. Trachusa, Jurine. 



Body elongate : maxillary palpi minute, 3-jointed : labial palpi 

 4-jointed : fore-wings with two complete sub-marginal cells. 



Sp. 1. Chelostoma Florisomne, Latreille. 



Female. — Length 4 — 5£ lines. Black, thickly and finely punc- 

 tured ; head subquadrate, the mandibles very prominent and ciliated 

 within with ferruginous hair, on each side of the clypeus a patch of 

 whitish hair ; the antennas clavate ; the cheeks thinly clothed with 

 ochreous hair, as well as the sides of the thorax which is ovate ; the 

 apical margin of the wings brown ; the posterior tarsi clothed within 

 with ferruginous hair ; the abdomen cylindric, all the segments above 

 have a white marginal fascia, the first generally interrupted ; beneath 

 densely clothed with pale yellow hair. 



Male. — Length 4 — 5 lines. Black, thickly punctured ; the face 

 densely clothed with pale yellow hair, the mandibles acutely biden- 

 tate, ciliated beneath with long ochraceous hair, the cheeks terminat- 

 ing in an obtuse tooth or prominence at the base of the mandibles ; 

 the intermediate joints of the antennae angulated beneath ; the thorax 

 thinly clothed with pale yellow hair ; the margin of the wings brown ; 

 the tarsi beneath clothed with yellow hair, the calcaria testaceous ; the 

 abdomen linear, incurved, and bidentate at the apex ; the margins of 

 the segments ciliated laterally with pale yellow hair; beneath, the se- 

 cond segment forming a stout prominence, concave above, the fourth 

 segment is deeply concave and clothed with bright yellow hair, the 

 apical segment is recurved and bidentate. 



This is the only species of the genus hitherto discovered in this 

 country, the Apis maxillosa of Linnaeus being the female, and his A. 

 florisomnis the male. This bee is very abundant ; I have received it 

 from the Isle of Wight, and from Scotland, and have captured it my- 

 self in Yorkshire ; it forms its burrows in old posts, rails, &c. ; and it 

 is by no means an uncommon circumstance to find large colonics 



