58 ais t dee:ntdj3. 



to forty yards ; in such situations the species can be found throughout 

 the summer, and up to the end of August. A similar colony has 

 been observed at Yentnor ; it is equally numerous at Sidmouth, 

 South Devon. The colour of the pubescence is very subject to 

 bleaching ; males are frequently found whose pubescence is white. 



42. Andrena extricata. 



A. nigra, grisescenti villosa, abdomine fasciis tribus albis, tibiarum 

 posticarum scopa fulva. 



Andrena extricata, Smith, Zool. vii. Append. 59 ; Bees Great Brit. 87 . 



Female. Length 5 lines. Black ; the face clothed with short pale 

 fulvous pubescence, on the vertex it is fulvous. Thorax clothed 

 with pale fulvous pubescence ; that on the legs is of the same 

 colour; the apical joints of the tarsi rufo-piceous, the claws ferru- 

 ginous, the floccus yellowish white, the scopa fulvous ; the wings 

 hyaline, their apical margins faintly clouded, the nervures ferru- 

 ginous. Abdomen closely punctured, the basal and three following 

 segments have a white marginal fascia, the first more or less ob- 

 literated, the apical fimbria fuscous. 



Male. Length 4 lines. — The face has a bright fulvous pubescence, 

 on the vertex it is fuscous ; on the thorax and legs it is pale ful- 

 vous, the apical joints of the tarsi ferruginous ; the wings hyaline, 

 the nervures pale ferruginous. Abdomen ovate-lanceolate, very 

 glossy ; the segments have white marginal fasciae, the apex fulvous. 



Notwithstanding the differences in the colour of the pubescence of 

 this species, particularly that on the face of the male, it is possibly a 

 local variety of A. fulvicrus. It has been taken at Weymouth, near 

 Liverpool, and in Yorkshire. 



43. Andrena polita. 



A. nigra, fulvo pilosa, thorace rufescenti pilosa, tibiis tarsisque 

 posticis atque abdominis apice fulvis. 



Female. Length h\ lines. — Black ; the face clothed with fulvous 

 pubescence ; the fiagellum fulvo-piceous beneath. Thorax, the 

 disk clothed with rufo-fulvous pubescence, on the metathorax and 

 sides it is paler ; the wings subhyaline, their apical margins slightly 

 clouded and iridescent ; the tegulse rufo-testaceous ; the pubescence 

 on the legs fulvous, the scopa bright fulvous, the floccus pale ful- 

 vous, the tarsi ferruginous. Abdomen shining, oblong-ovate, 

 closely and very delicately punctured, the apical margins of the 

 segments obscurely rufo-testaceous ; the second, third, and fourth 

 segments having a narrow pale fulvous* fringe more or less oblite- 

 rated in the middle ; the fifth and apical segments clothed with 

 bright fulvous pubescence. 



