4. ANDRENA. 43 



has also been found in Scotland. The beauty of its colouring when 

 it first appears soon fades. Its male is the M. angulosa of Kirby. 



21. Andrena varians. 



A. atra, thorace abdominisque basi hirsuto-fulvis, tibiarum posti- 

 carum scopa versicolori. 



Andrena varians, Smith, Zool. v. 1741 <$ $ . 



Nyland. Notts, ur Sallsk. pro Faun, et Flo. Fenn. i. 213. 



Thorns. Opusc. Ent. 149 ; Hym. Scand. ii. 92. 

 Apis variant, Fossi, Mant. 317. 



Panz. Faun.. Germ. 56. 12 $ . 

 Melitta varians, Kirby, Mon. Apum Angl. ii. 117 § . 



Female. Length 5-5^ lines. — Black ; the pubescence on the head 

 black, that on the clypeus brown. The thorax above clothed with 

 rufo-fulvous pubescence ; beneath and on the femora it is pale 

 fulvous ; the wings subhyaline, their apical margins slightly 

 clouded, the nervures ferruginous ; the floccus cinereous ; the 

 scopa fuscous above, and of a silvery whiteness beneath. Ab- 

 domen ovate, the pubescence at the base fulvous, posteriorly it is 

 black ; beneath, the segments margined with dark brown pubes- 

 cence. B.M. 



Male. Length 4-5 lines. — Head wider than the thorax; above, 

 narrowed posteriorly; the face covered with white pubescence, 

 above it is pale fulvous ; mandibles forcipate, obsoletely dentate at 

 their base ; antennae as long as the thorax. Thorax thinly clothed 

 above with rufo-fulvous pubescence, paler at the sides and white 

 beneath ; wings hyaline, their apical margins slightly clouded, iri- 

 descent, with the tegulse rufo-piceous ; the legs with griseous pubes- 

 cence. Abdomen oblong-ovate, with a little rufo-fulvous pubes- 

 cence at its base, that at the apex bright pale fulvous. B.M. 



This species is found during April, May, and June; it closely 

 resembles A. helvola ; but the females are readily distinguished. 

 A. varians has black pubescence on the abdomen with fulvous at its 

 base ; A. helvola has whitish pubescence on the four basal segments, 

 that on the apical segments being dark fuscous ; it has also some 

 fulvous at the base. The males are very much alike ; that of A. 

 helvola has at the base of the mandibles an angular projection, form- 

 ing frequently a short tooth ; this is not developed in the male of A. 

 varians. The males I have taken in coitu are here contrasted. 



22. Andrena atriceps. 



A. nigra, griseo pubescens ; thorace pube rufescente ; tibiis posticis 

 fulvis, scopa fulvo-aurea. 



Andrena atriceps, Smith, Bees Great Brit. 70 $ £ • 

 Melitta atriceps, Kirby, Mon. Apum Angl. ii. 114 J . ' 



