114 HYMENOPTEHA. 



towm'ils the apex ; the margins of the segments narrowly testa- 

 ceous. 



Obs. All the specimens of this species which have been exa- 

 mined are much infested by a s])ecies of Stylops, three or four 

 infesting each individual; it closely resembles the A. convexius- 

 cula, which is usually attacked in a similar manner. 

 Hob. Nova Scotia. 



135. Andrena desponsa, n. s. B.M. 



Male. Length 4i lines. — Black, the face and disk of the tho- 

 rax clothed with pale fulvous pubescence, as well as the legs and 

 thorax beneath, the latter being rather lighter coloured; legs 

 rufo-testaceous, the tarsi ))eing ])aler, and having a bright fulvous 

 pubescence beneath ; wings hyaline, iridescent, the nervures pale 

 testaceous. Abdomen sublanceolate, the base has a httle thin 

 pale fulvous jmbescence, the apex fulvous, margins of the seg- 

 ments narrowly rufo-piceous. 



Obs. This male probably belongs to A. victima, to which it 

 bears a strong resemblance, and like that insect is frequently 

 attacked by Stylops. 

 Hob. Nova Scotia. (Lieut. Redman.) 



136. Andrena Integra, n. s. B.M. 



Female. Length 4 lines. — Black, the face thinly clothed with 

 pale fulvous pubescence, the mandibles ferruginous and ciliated 

 with ferruginous hairs. Thorax, the disk thinly covered with 

 fulvous pubescence, on the sides and beneath it is of a much 

 paler tint, the metathorax very finely granulated and having at 

 the base an enclosed space ; the wings subhyaline, tegulae testa- 

 ceous, nervures pale ferruginous ; legs dark rufo-testaceous, the 

 tarsi palest, their pubescence pale fulvous ; the floccus and scopa 

 beneath of a glittering whiteness, above of a golden lustre. 

 Abdomen oblong-ovate, shining, and having on each side of the 

 second and third segments on their apical margins a short fringe 

 of v>hite pubescence, margins obscurely rufo-piceous ; anal fim- 

 bria fulvous. 

 Hah. United States. (E. Doubleday, Esq.) 



137. Andrena simplex, n. s. B.M. . 



Female. Length 4 lines. — Black, the head above the in- 

 sertion of the antenna; covered with irregular stria; inchning in- 

 wards towards the anterior stemma, the clypeus having a few 

 large scattered punctures, and transversely sculptured with a fine 



