228 



EXPLANATION OF THE PLATES. 



PLATE III. 



Fig. 



1 . Ammophila sabulosa J 



2. Dolichurus cormculus 



3. Dinetus pictus J . 



4. Miscophus bicolor J ' 



5. Astata boops rf . 



Fig. 



6. Oxybelus mucronatus J . 



7 . Crabro quadrimaculutus J . 



8. Crabro (Rhopalum) tibi- 



alis $ . 



PLATE IV. 



1 . Passal&cus gracilis $ . 



2. Trypoxylon attenuatum J . 



3. Cemonus unicolor . 



4. Mellinus sabulosus J . 



5. Didineis lunicornis tf 



6. Gorytes bicinctus $ . 



7. Mimesa equestris 2 . 



8. Cerceris arenaria 5 . 



PLATE V. 



1 . Philanthus triangulum $ . 



2. Eumenes coarctatus . 



3. Antennae of the c? of .Ew- 



men.es coarctatus. 

 ' 4. Odynerus crassicornis J . 



5. Antennae of Odynerus pa- 



rietum <j> . 



6. Antenna of Odynerus pa,- 



rietum <$ . 



7. Antenna of Odynerus spi- 



nipes c? . 



8. Intermediate leg of Ody- 



nerus spinipes $ . 



9. Intermediate leg of Ody- 



nerus melanocephalus <$ . 



10. Vespa Crabro , 10 , 



the labium ; 106, the 

 labial palpi; 10 c, the 

 mentum ; 10 c?, the 

 maxillary palpus. 



1 1 . Vespa arbor ea $ . 



12. Head of Vespa arborea $ . 



13. Head of Vespa vulgaris j . 



14 . The yellow coronet-shaped 



spot above the clypeus 

 of Vespa vulgaris c? 



14 a, the double curve 

 marks the basal line of 

 the clypeus. 



15. The coronet-shaped spot 



in Vespa vulgaris, show- 

 ing the manner in which 

 the two spots beneath 

 are sometimes united to 

 its base. 



16. The coronet-shaped spot 



in the worker of Vespa 

 vulgaris. 



I/'. A variety of the same which 

 frequently occurs. 



18. The coronet-shaped spot 



in Vespa Germanica <$ . 



19. The coronet- shaped spot 



in the worker of Vespa 

 Germanica tf. 



20. The sexual organs of the 



J of Vespa vulgaris. 



21. The sexual organs of the 



J 1 of Vespa Germanica. 



22. HetLdiof Vespa sylvestrisQ . 



23. Head of Vespa rufa J . 



