9o IIYMENOPTERA. 



of Van der Linden. This species has been regarded, by some 

 authors, as being only a variety ofAporus unicolor; Van der 

 Linden himself does not point out any other difference than 

 colour, but I can detect a structural difference, and on this 

 I uphold the species as good; the specific distinction is 

 pointed out in the description given hereafter. 



Of Vespidce, the only rarity met with, was Odynerus 

 trifasciatus. The Anthophila were not numerous in species ; 

 about twelve belono-ins:; to the s^enus Halictus occurred, all 

 being those of general distribution. Of the genus Andrena 

 several rare species were taken, all being found on High 

 Peak ; Andrena pilipes was found plentifully ; I can only 

 imagine this circumstance attributable to the elevated situa- 

 tion in which they appeared, it being 500 feet above sea 

 level; these bees were in the finest possible condition; this 

 appeared strange, as I had taken numerous examples, worn 

 and faded, early in July at Southend, where the bee was 

 certainly gone for the season, in the month of August; — these 

 remarks will equally apply to the capture of a series of fine 

 specimens of Andrena thoracica. 



A single specimen of an Andrena was taken, which at the 

 time of its capture I without hesitation considered to be a new 

 species, — I hunted however in vain for others ; and although 

 it differs so greatly in the colour of its pubescence from 

 Andrena pilipes, I am now inclined to think, may be an 

 abnormal example of that species; I never, however, among 

 the hundreds of specimens I have seen of that bee, ever 

 observed any variation except in the occasional deeper tint 

 of the wings; I shall provisionally name and describe it, 

 leaving its specific value to be determined hereafter. 



Andrena roscE has always hitherto been accounted a rare 

 species ; at High Peak it was very plentiful, frequenting the 

 flowers of the bramble. I have also to record the capture of 



