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BEES OF GREAT BRITAIN. 81 



: latter having a very pale fulvous pubescence on tlie disk, on 

 the sides it°is white; the wings as in the female; legs nigro- 

 piceous ; the apical joints of the anterior and intermediate tarsi, 

 and the' whole of the posterior pair, fulvous. Abdomen elon- 

 gate, lanceolate, shining, and having the apical margins of the 

 segments depressed and thinly fringed with griseous pubes- 

 cence ; the extreme apex ferruginous. B.M. 



This is a rare species : it is occasionally met with at Highgate, 

 in company with the male described. There is very little doubt 

 of the male described by Kirby being that of A, atriceps. This 

 bee appears in May. A. lacinia of Smith is only the present 

 species in very fine condition. 



36* Andrena denticulata. 



A, atra, pallide fulvo-pilosa; thoracis disco sparsim fulvo-piloso ; 

 abdominis segmentis marginibus pallide fulvis. 



Melitta denticulata, Kirby, Mon, Ap. Angh ii. 133. 72 $ , 

 MeUtta Listerella, Kirby, Mon. Ap, Angl. ii. 137. 76 $ . 

 Andrena Listerella, Smith, ZqoL v. 1752. 45 ^J ^ . 

 Nyland. Ap, Boreal, p. 219. 17. 



Female. Length 5-5^ lines. — Black ; the face has a short,. 

 pale fulvous pubescence; the flagellum, except the three basal 

 joints, fulvous beneath. Thorax : the disk very sparingly 

 covered with fulvous pubescence, paler at the sides, and 

 very dense at the sides of the metathorax ; the tegulae nigro- 

 piceous, the wings subhyaline, slightly fulvous, the nervures 

 ferruginous, the apical margins clouded; legs nigro-piceous, 

 sometimes rufo-piceous, the femora fringed with pale fulvous 

 pubescence, the floccus dense, and of a pale yellow, the scopa 

 and the tarsi beneath bright fulvous; the apical joints of the 

 tarsi ferruginous. Abdomen subovate, shghtly depressed, the 

 apical margins of the segments have a fascia of yellowisli-white 

 pubescence, the apical fimbria fusco-ferruginous. B.M. 



Male, Length 4 lines. — Black; the face covered with thin 

 oehraceous pubescence; the labrum produced; a minute tooth 

 on each side on the anterior margin of the clypeus ; the man- 

 dibles forcipate, armed at their base with a minute tooth, their 

 tips ferruginous; the flagellum fulvo-piceous beneath. Thorax : 

 the pubescence oehraceous ; the wings subhyaline ; the tarsi 

 bright fulvous beneath ; the apical joints of the tarsi rufo-tes- 

 taceous. Abdomen lanceolate and shining; the three inter- 



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