4. AXDREXA. 53 



the disk thinly clothed with fulvous puhescence ; on the metathorax 

 and sides it is much paler, as well as on the femora heneath ; 

 tegulse piceous ; wings subhyaline, faintly clouded at their apica 

 margins ; the floccus pale yellowish white, the scopa pale fulvous, 

 the posterior tibia; and tarsi ferruginous. Abdomen ovate, fuscous, 

 the apical margins of the segments sparingly fringed with pale 

 fulvous pubescence ; the apical fimbria fuscous. B.M. 



Hale. Length 4 lines. — The face thinly clothed with pale fulvous 

 pubescence ; the antenna? half the length of the thorax, the latter 

 having a very pale fulvous pubescence on the disk, on the sides it is 

 white ; the wings as in the female ; legs nigro-piceous ; the apical 

 joints of the anterior aud intermediate tarsi and the whole of the 

 posterior pair fulvous. Abdomen elongate lanceolate, shining, 

 and having the apical margins of the segments depressed and thinly 

 fringed with griseous pubescence ; the extreme apex ferruginous. 



B.M. 



This species appears usually in May, and is by no means a common 

 insect. It occurs sparingly at Hampstead and Highgate, and is found 

 on dandelions (Leontodon taraxacum) ; it has also been taken at 

 Household, near Norwich. 



35. Andrena denticulata. 



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

 abdominis segmentis marginibus albidis. 



Andrena denticulata, Smith, Bees Great Brit. 81 <$ §. 

 .Melitta denticulata, Kirby, Man. Apum Angl. ii. 133 <$ . 

 Melitta listerella, Kirby, lib. cit. 137 2 . 

 Andrena listerella, Smith, Zool. v. 1752. 



Nyland. Xotis. ur Sdllsh. pro Faun, et Flo. Fenn. i. 219. 



Schenck, Nass. Bien. 249. 



Tltoms. Opusc. Fnt. 148 ; Hym. Scand. ii. 88. 



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 sparing covered with 

 fulvous pubescence, paler at the sides, and very dense at the sides 

 of the metathorax ; the tegulse 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, slightly 

 depressed, the apical margins of the segments have a fascia of 

 yellowish white pubescence, the apical fimbria fusco-ferruginous. 



BM. 



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

 ceous pubescence ; the labrum produced ; a minute tooth on each 

 side on the anterior margin of the clypeus ; the mandibles forcipate 



