DESCRIPTION OF THE COLOURED 

 PLATES 



PLATE A 



Figs. 1, 2, 3. Formica sanguinea Latr. : male, female, and 

 worker. The host of Lomechusa (p. 89), also a slave-making 

 species ; makes irregular nests of dead leaves, etc., generally 

 against a sloping bank. 



Figs. 4, 5. Mutilla europcea Linn.: male and female. One of 

 the few British species of Aculeates where the female is 

 wingless ; found in sandy places running in the sun. 



Fig. 6. Cerceris arenaria L. : female ; burrows in the sand, and 

 provisions its nest with beetles (p. 20). 



Fig. 7. Ammophila sabulosa L. : female ; burrows in the sand, 

 provisions its nest with caterpillars, peculiar for its very 

 elongated waist (p. 22). 



Fig. 8. Crdbro cribrarius L. : male : peculiar for its paddle- 

 like tibiae and flattened antennae (p. 103). 



Fig. 9. Odynerus spinipes L. : male ; peculiar for the form of 

 its middle femora, which are cut out almost in two semi- 

 circles (p. 101) ; female makes a tubular entrance to her 

 nest (p. 25). 



PLATE B 



Fig. 10. Colletes succinctus L. : female ; lines its cells with a 

 gluey material (p. 44) ; colonizes in sandy banks ; host 

 of Epeolus rufipes (fig. 19). 

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