PSITHYRUS RUPESTRIS 207 



darius and is to be found in most places where its 

 host is abundant. It is plentiful in East Kent, 

 where it victimises from 20 to 40 per cent of the 

 colonies of B. lapidarius. It is also particularly 

 common in many parts of Suffolk and Norfolk. In 

 Ireland it has been recorded from Co. Cork, Co. 

 Limerick, and Co. Sligo. The variety of the female 

 having a pale band on the thorax is rare, but it 

 occurs occasionally at Ripple, and has been taken 

 near Norwich. 



This is the latest of all the humble-bees to 

 awaken in the spring ; it may be seen throughout 

 June searching for the nests of B. lapidarius. 



