Insects. 1739 



Sp. 21. Andrena nigro-^nea. 

 Melitta nigro-cenea, Kirby. 



Female. — (Length 6 — 7 lines). Black ; the pubescence on the 

 face black, with a few fulvous hairs at the base of the antennae ; the 

 cheeks clothed with fulvous ; the pubescence on the thorax rufo- 

 fulvous above ; the tegulae piceous ; the wings subhyaline, their ner- 

 vures testaceous ; the stigma ferruginous ; the apical margins of the 

 wings slightly clouded ; the femora have a fringe of fulvous hair, that 

 on the tibiae and tarsi is fuscous ; the floccus pale fulvous ; the scopa 

 bright rufo-fulvous ; all the tarsi beneath ferruginous. Abdomen 

 ovate, nigro-aeneous, thinly clothed with fulvous hair ; the apical fim- 

 bria black. 



Male. — (Length 5 — 6 lines). Black ; the face clothed with dark 

 rufous hair, black along the margin of the eyes and on the vertex ; 

 the antennae as long as the head and thorax, the latter clothed above 

 with fulvous hair, as are also the legs. Abdomen ovate, thinly clothed 

 with fulvous hair, and with black at the apex. 



This is one of the most abundant species of the genus, and is very 

 generally distributed: it is one of the most interesting, in conse- 

 quence of its being that upon which Stylops was first discovered by 

 Mr. Kirby. 



Sp. 22. Andrena bimaculata. 

 Melitta bimaculata, Kirby. 



Male. — (Length 5 j lines). Black ; the face clothed with brown- 

 black pubescence ; the antennae as long as the head and thorax, the 

 ioints arcuate. Thorax clothed above with ferruginous pubescence, 

 which is rather paler beneath and on the legs ; the tegulae nigro- 

 piceous • the wings subhyaline, their nervures testaceous, the apical 

 margins slightly clouded. Abdomen ovate-lanceolate, the margins of 

 the segments piceous, thinly clothed with pale ferruginous hair ; be- 

 neath, the second segment has two lateral rufous spots. 



I consider this species quite distinct from Mr. Kirby's " Melitta 

 atriceps ;" independent of the rufous spots, it has entirely black legs, 

 whilst in " atriceps," or the male of " tibialis," the posterior tibiae are 

 pale at their apex. I have not seen this insect in any cabinet except 

 the Kirbyan; nor do I know its female. 



