HYMENOPTERA-ACULEATA. 403 



This genus does not seem to be a prey to any 

 inquiline bees, but it has an enemy in a small 

 Dipteron of the genus Miltogramma, whose grubs 

 nourish themselves at the expense of the larvae 

 of the bee. 

 D. hirtipes. — Latr. — Along Cheshire coast, B.C. For- 

 merly very abundant on Wallasey sandhills, but 

 apparently not there now. Inland at Sale and 

 valley of the Bollin, J.B.H. 



Macropis, Panz. — The single British species of this genus 

 has only been taken in the South of England, and 

 is unlikely to occur in our district. 



Panurgus, Panz. — Our two British species burrow gre- 

 gariously in sandy banks or sometimes in hard 

 trodden pathways. They have not hitherto been 

 observed in our district, though P. ursines occurs 

 not far off in North Wales. 



The latter species is sometimes attacked by the 

 inquiline Nomada fabriciana, and the Dipteron 

 Miltogramma punctata preys upon the larvae of 

 Panurgus. 



Dufourea, Lep. — This genus contains but one species in 

 Britain, which is very rare. Nothing appears to 

 be known of its habits. 



Rophites, Spin. — Another genus with only one species, to 

 which the above remarks equally apply. 



Nomada, Fab. — This is a genus of inquiline or, as they 

 are frequently called, " cuckoo bees." These 

 wasp-like looking insects, instead of excavating 

 burrows and storing up food for their off- 

 spring therein themselves, like other Aculeates, 

 simply appropriate the results of the toil of other 

 bees, and lay their eggs in the carefully con- 

 structed and well victualled cells of various indus- 



