DESCRIPTION OF THE COLOURED PLATES
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 europæa 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. Crabro cribrarius L.: male; peculiar for its paddle-like tibiæ and flattened antennæ (p. [103]).
Fig. 9. Odynerus spinipes L.: male; peculiar for the form of its middle femora, which are cut out almost in two semicircles (p. [101]); female makes a tubular entrance to her nest (p. [25]).
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]).
Fig. 11. Sphecodes subquadratus Smith: female; cuckoo of a species of Halictus; female hibernates like its host (p. [17]).
Fig. 12. Halictus lencozonius Schr.: burrows in the ground; the host of Sphecodes pilifrons Thoms (p. [17]).
Fig. 13. Vespa crabro L.: female (the Hornet), nests in hollow trees; host of the rare beetle Velleius dilatatus (p. [38]).
Fig. 14. Vespa vulgaris L.: female: one of our commonest wasps; nests usually in the ground (p. [35]); host of a peculiar beetle (Metœcus paradoxus) (p. [38])
Figs. 15, 16. Andrena fulva Schr.: male and female; the bee which burrows in lawns, etc. (p. [9]); host of Nomada ruficornis var. signata (p. [15]).
Fig. 17. Panurgus ursinus Gmel.: Female; legs loaded with pollen, burrows in hard sandy paths, etc. (p. [49]). Males sleep curled up amongst the rays of yellow composite flowers.
Fig. 18. Nomada ruficornis L. var. signata: cuckoo of Andrena fulva (figs. 15 and 16).
Fig. 19. Epeolus rufipes Thoms: female; cuckoo of Colletes succinctus (fig. 10).
Fig. 20.—Megachile maritima Kirby: female; burrows in the ground, makes its cells of pieces of leaves, which it cuts out with its mandibles; host of Cœlioxys conoidea.
Figs. 21, 22. Cœlioxys conoidea Illig: male and female; cuckoo of Megachile maritima.
Fig. 23. Burrows of Megachile Willughbiella Kirby, in a piece of rotten willow; each burrow originally contained six cells, but two of the left-hand series have been lost.