228 



EXPLANATION OK THE PLATES. 



PLATE III 



Fig. 



1. Ammophila sabulosa $. 



2. Dolichuru8 corniculus § . 

 .'i. Dinetus pictus $ . 



4. Miscophus tricolor §. 



5. dstata hoops S ■ 



Fig. 



6. Oxybelus mucronatus $ . 



7 . Crabro quadrimaculatus $ , 



8. Crabro (Rhopalum) tibi- 



alis $ . 



I. 

 2. 



3! 



4. 



PLATE IV. 



Passalcecus gracilis $ . 

 Trypoxylon attenuatum $ 

 Cemonus unicolor 5 • 

 Mellinus sabulosus $ . 



5. Didineis lunicornis S , 



6. Gorytes bicinctus S • 



7. Mimesa equestris § • 



8. Cerceris arenaria 2 . 



PLATE V. 



1. Philanthus triangulum §. 



2. Eumenes coarctatus $ . 



3. Antennae of the J of Eu- 



menes coarctatus. 



4. Odynerus crassicornis $ . 

 •">. Antenna; of Odynerus pa- 



rietum £ . 

 fi. Antenna of Odynerus pa- 

 rietum J . 



7. Antenna of Odynerus spi- 



lt ipes c? . 



8. Intermediate leg of Ocfy- 



nerws spinipes S ■ 



9. Intermediate leg of Of/i/- 



nerMS melanocephalus J . 



10. Fes;ja Cra&ro $. 10 «, 



the labium ; 10 6, the 

 labial palpi ; 10 c, the 

 mentum ; 10 d, the 

 maxillary palpus. 



11. Vespa arbor ea §. 



12. Head of Vespa arborea 2 ■ 



13. Head of Vespa vulgaris $ . 



14. The yellow coronet-shaped 



spot above the clypeus 

 of Vespa vulgaris J . 



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. 

 1/'. A variety of the same which 

 frequently occurs. 



18. The coronet-shaped spot 



in Vespa Germanica 3 . 



19. The coronet-shaped spot 



in the worker of Vespa 

 Germanica <$ . 



20. The sexual organs of the 



3 of Vespa vulgaris. 



21. The sexual organs of the 



S of Vespa Germanica. 



22. Hea&of Vespa sylvestris $ . 



23. Head of Vespa rufa 2 ■ 



