218 [September, 



r 



TWO HERMAPHRODITIC SPECIMENS OF ANDRENA, AND 

 A MONSTROUS FORM OF 'SALIUS EXALTATUS, Fab. 



BY R. C. L. PERKINS, M.A., D.S C ., F.Z.S. 



Amongst some species of Andrena, collected this spring, two 

 hermaphroditic examples were taken. One of these is A. bimaculata, 

 K., the other, A. flavipes, Panz. (= A. fulvicrus, K.). 



In the latter case the specimen is bilaterally asymmetrical, the 

 right half showing $ chai'acters, the left $ . In the bimaculata there 

 is no such division. 



A. FLAVIPES. 



Left Side. 



Right Side. 

 Hairs of face longer. 

 Antennae thicker, 13-jointed, normal 



$ organ. 

 All the legs as in ordinary $ . 



Hairs shorter, but less so than in 



ordinary $ . 

 Antennae thinner, 12-jointed, normal 



$ organ. 

 All the legs as in ordinary ? . 



The general appearance is that of a large robust £ , the thorax 

 clothed as in this sex, as also the abdomen, and quite different from 

 the ? . 



Genital armature and 7th and 8th ventral segments as in the £ , 

 there being no trace of $ characters. The ducts, glands, &c, as in 

 normal g , and living spermatozoa were present. 



A. BIMACULATA. 



Like a very large and robust <§ in appearance and clothing, but 

 all the legs are those of a $ , the scopse and the floccus of the 

 hind ones developed, though rather less perfectly than in normal ? , 

 and a little more on one side than the other. 



Abdomen as in $ , but the fifth dorsal segment bears dense 

 appressed hairs apically, and the 6th has an abnormal " pygidial 

 area," fringed on each side, the clothing of these segments evidently 

 corresponding to the $ anal fimbria.- 



No trace of ? genital structures was found, the hidden segments, 

 genital armature, glands and ducts, all $ . 



There was no evidence of stylopization or internal parasites in 

 either of these examples. 



Last year, two monstrous examples of Salius exaltatus, $ , were 

 taken on the same day from Umbelliferous flowers, on which were 

 many normal specimens. 



