106 HYMENOPTERA. 



89. Andrena nigrifrons, n. s. 



Female. Len<;th !i\ lines. — Black, the head thickly clothed with 

 black puhescence. Thorax, above clothed with fidvous pubes- 

 cence, thinly so on the disk, thickly on the sides of the meta- 

 thovax ; the i)ul)cscence on the anterior femora and tibi;c is black 

 and on the tarsi beneath fulvous ; on the intermediate and pos- 

 terior lews it is fulvous, all the tarsi and the posterior tibire are 

 fulvous ; wings hyaline, their apical margins slightly clouded, the 

 nervures ferruginous. Abdomen ovate, the two basal segments 

 clothed with fulvous pubescence, the following with black ; the 

 second, third and fourth segments have a marginal fringe of ful- 

 vous pubescence, the anal fimbria black. 



Male. — Head as wide as the thorax, the clypeus white and 

 having two minute black spots, and a long beard of white pubes- 

 cence ; on the face above, the ])ubescence is pale fulvous, and 

 close to the margins of the eyes is a little which is black ; 

 the thorax is clothed as in the female, but the pul)escence is 

 longer and the posterior tibia are only ferruginous at their apex ; 

 the four basal segments of the abdomen are covered with long 

 pale fulvous pubescence, on the fifth and following segments it 

 is black ; on the cheeks, coxa; and trochanters the pubescence 

 is long and pale. 

 Hab. Albania. (Coll. W. W. Saunders, Esq.) 



90. Andrena concinna, n. s. 



Female, Length 6^ lines. — Black, the face below the inser- 

 tion of the antennae covered with a griseo-fulvous pubescence, 

 the longitudinal depressions at the margins of the eyes covered 

 with a whitish pile ; the margin of the vertex fringed with fulvous 

 hairs. Thorax, the disk covered with short fulvous pubescence, 

 at the sides and beneath it is much palei", the tegulae and ner- 

 vures of the wings rufo-piceous ; wings hyaline and having a 

 slight fulvous tinge, their apical margins faintly clouded ; the 

 tibije and tarsi above clothed with fulvous pubescence, the apical 

 joints of the tarsi ferruginous, the floccus on the posterior tro- 

 chanters nearly white. Abdomen elongate-ovate, the apical 

 margins of the segments depressed, and having a fascia of pale 

 fulvous pubescence, the apical fimbria bright fulvous, the seg- 

 ments beneath have an irregular fringe of pale pubescence ; the 

 abdomen above is exceedingly closely and finely pxmctiured, 

 giving it a subopake appearance. 

 Hab. Albania. (Coll. W. W. Saunders, Esq.) 



