PLATE XII. 

 HUMBLE BEES. 



X. Bombus lucorum (Female). 



2. Bombus muscorum (Female). 



3. Apathus vestalis (Female). 



4. Eucera longicornis (Male). 



Plauis : — 



Hawthorn. Above. 



Sea Campion (^Silene tnantima). Below, 



