166 APIDiE. 



Megachile maxillosa, Latr. Hist. Nat. Ins. xiv. 51. 

 Chelostoma maxillosa, Latr. Gen. Crust, et Ins. iv. 162. 



Brulle, Expect Sc. de Moree, iii. 342. 



St.-Farg. Hym. ii. 407. 



Schenck, Nass. Bien. 348. 

 Heriades maxillosa, Zett. Ins. Lapp. 467. 



Nyland. Notts, ur Stilish, pro Faun, et Flo. Fenn. i. 268 S 2 '■> Mon. 

 Heriades, Mem. Soc. Imp. Sc. Nat. Cherb. iv. 107. 



Female. Length 3-5 lines. — -Black, shining and punctured, the 

 pubescence sparing and griseous ; on the face on each side of the 

 clypeus a little white pubescence ; the anterior margin of the 

 clypeus produced and forming an elevated flattened plate : the fla- 

 gellum more or less rufo-piceous beneath. The thorax with a little 

 scattered pubescence on the sides and beneath, that on the legs 

 short and griseous, but dense and fulvous on the tarsi beneath ; the 

 calcaria pale testaceous ; wings subhyaline, their apical margins 

 clouded, the nervines black. Abdomen elongate-clavate, the apical 

 margins of the segments with narrow white pubescent fasciae ; 

 clothed beneath with pale fulvous pubescence. B.M. 



Male. Length 4-5 lines. — Black ; the face densely clothed with 

 fulvo-ochraceous pubescence ; the mandibles bidentate and fringed 

 beneath with long pale hairs ; the cheeks produced and forming a 

 blunt tubercle at the base of the mandibles ; the antennae filiform, 

 the flagellum, except the two basal joints, flavo-testaceous beneath. 

 Thorax with long, loose, very pale fulvous or cinereous pubescence ; 

 the wings as in the female. Abdomen cylindric, and thinly covered 

 with pale ochraceous pubescence ; the apex armed with two blunt 

 teeth. B.M. 



This is a very common insect in this country, appearing early in 

 June ; it is found throughout Europe, and is one of the true carpenter 

 bees. A closely allied species, G. nigricorne, which occurs in Den- 

 mark, Sweden, and France, will probably be found in North Britain, 

 and may be mixed with G. florisomne in collections. The male of 

 G. nigricorne has the antennas entirely black and the joints simple ; 

 the apical segment deeply concave, its margin truncate, the lateral 

 angles being subdentate or acute ; the female wants the tubercle on 

 the clypeus. This short description will serve to identify the 

 species. 



2. Chelostoma campaimlarum. 



G. atrum, glabriusculum ; maris ano inflexo, acute bidentato, ventris 

 basi gibba. 



Chelostoma campanularum, Fversm. Bull. Soc. Moscou, xxv. 75. 



Smith, Bees Great Brit. 190. 

 Apis campanularum, Kirby, Mon. Apum Angl. ii. 256 $ $ . 

 Megachile campanularum, Latr. Hist. Nat. Ins. xiv. 52. 

 Heriades campanularum, Spin. Ins. Ligur. i. 198. 



St.-Farg. Hym. ii. 405. 



Smith, Zool. iv. 1448. 



