NOTES ON ACULEATE HYMENOPTERA. 45 



Megachile versicolor. This very rare species was cap- 

 tared near Exeter by Mr. Parfitt ; only two or three speci- 

 mens are at present, I believe, in collections, the male has 

 not been taken. 



Apathus rupestris. In the Monograph on the Bees of 

 Great Britain, we quoted, with a doubt, the Bremus po~ 

 morum of Panzer as one of the varieties of the male ; all- 

 doubt is now removed, as we captured three fine fresh speci- 

 mens of this highly coloured variety at Kingsdown. 



Variety Po morum. Black ; the pubescence on the 

 head black ; the clypeus nearly naked, very smooth and 

 shining. Thorax clothed above with white pubescence, with 

 a band of black between the w r ings ; the tarsi beneath, and 

 the posterior tibia? within, with short fulvous pubescence; 

 the wings hyaline, faintly clouded at their apex. Abdomen r 

 the first segment with white pubescence, on the second it is 

 pale fulvous, on the third and following segments it is rich 

 rufo-fulvous. 



The capture of this very beautiful variety is a great ac- 

 quisition ; we have only seen a single example before, we 

 think in the collection of Mr. Curtis, who has collected a £Ood 

 deal at Dover ; probably it was taken there, ours being 

 found at Kingsdown ; the variety may be peculiar to the 

 south-east coast. 



Several instances of the capture of Bombi (in coitu) have- 

 been recorded ; indeed, we ourselves have met with two-thirds 

 of the species under such circumstances, but until August 

 last we never met with any species of Apathus; but at 

 Kingsdown we took A. rupestris (in coitu); we also took 

 three pairs of B. lapidarius, and the male of lapidarius con- 

 nected with B. terrestris; this is the first instance, which 

 we have observed, of the sexes of different species of Bombi 

 copulating. 



