1922 Insects. 



specimens occurring in which it is quite white. This species appears 

 about the end of May or the beginning of June. Notnada rufiventris 

 is parasitic upon this bee. 



Sp. 55. Andrena separata, Smith. 



Female. — (Length 6 lines). Black ; the clypeus yellow; the face 

 clothed with fulvous pubescence ; the antennae nigro-piceous beneath. 

 Thorax thinly clothed with fulvous on the disk ; the tegulae testa- 

 ceous ; wings sub-fuscous ; the pubescence on the legs fulvous ; the 

 floccus pale fulvous ; the scopa golden yellow ; the tarsi pale ferrugi- 

 nous. Abdomen ovate, convex ; the first, second and third segments 

 have a pale fulvous marginal fringe, the first broadly interrupted ; the 

 apical segment clothed with fulvous pubescence. 



This insect very closely resembles A. labialis, and had I only met 

 with a single specimen or two I might have felt justified in consider- 

 it to be a variety, differing only in having the clypeus white, but I 

 have seen a number of specimens. It is in the cabinets of Mr. Ste- 

 phens, Mr. Desvignes, Mr. Dale, Mr. Walcott, and my own. It may 

 indeed be only a variety, but I hesitate to consider it so. It is the 

 only instance with which I am acquainted of the female sex having a 

 white clypeus : my specimens were captured at High gate. The male 

 is not known. 



Sp. 56. Andrena Kirbii, Curtis. 



Female. — (Length 6 lines). Black ; the head minutely and closely 

 punctured ; the face clothed with ochraceous pubescence ; the anten- 

 nae piceous beneath. Thorax sparingly punctured, and thinly clothed 

 with short pale ochraceous pubescence ; the wings yellowish, clouded 

 at their apical margins ; the femora and tibiae clothed with pale pu- 

 bescence; tarsi ferruginous, the basal joint clothed with pale hair, 

 changing with the light to ferruginous. Abdomen minutely punc- 

 tured, pubescent, especially at the base, the margins of the segments 

 being narrowly fringed with pale ochraceous hair, forming four trans- 

 verse bands ; the apical fimbria yellowish-brown. 



The only specimen which 1 have seen of this fine species is in the 

 cabinet of Mr. Stephens : there is an admirable figure of it in Mr. 

 Curtis' s British Entomology, p. 129. The male is not known. "The 

 insect was formerly in the collection of the late Mr. Griffin of Nor- 

 wich, and was probably captured in the neighbourhood of that city/' 



