HYMENOPTEPoA-ACTJLEATA. 413 



from plants with woolly leaves, such as Stachys, 

 Ballota or Lychnis. 



No inquiline species seems yet to have been as- 

 sociated with this bee in Britain, though a watch 

 might be kept upon Stelis. M onodontomerus 

 attacks it. 

 A. manicatum, Linn. — Recorded so far only from valley 

 of the Bollin, J.R.H., and Rainhill, H.H.H. 

 though it probably occurs elsewhere, as it is 

 abundant in North Wales. 



Eucera, Scop. — The single species of this genus, E. longi- 

 cornis, burrows about eight inches deep in the 

 ground, and usually forms large colonies where 

 it occurs. It has not yet been observed in our 

 district. 



Melecta, Latr. — An inquiline genus containing two species 

 in Britain associated with Anthophora, to which it 

 is zoologically nearly related. M. luctuosa attacks 

 A. retusa, and M. armata apparently preys upon 

 both A. retusa and A. pilipes. Unlike the in- 

 quiline Nomadce and their hosts the Andrence, 

 between whom no enmity is apparent, the 

 Melectce sometimes attack and fight for very life 

 with the Anthophorce, whose nests and food stores 

 they endeavour to appropriate. These inquilines 

 have never yet been observed in our district, but 

 they should be sought for, as one of their hosts, 

 A. pilipes, is abundant. Curiously, however, M. 

 armata is very seldom seen in North Wales, 

 though A. pilipes swarms in some places 

 there. 



The parasitical Melecta is in its turn attacked by 

 enemies, including the larvsB of the Dipteron 

 Anthrax, on the Continent, at any rate, and the 



