Decapodernee Forvandlinger. 139 



Explanation of the Plates. 

 Plate I. 



Crangon vulgaris, (Fabr.). 



Fig. 1. First larval stage; dorsal view. X 47. 



2. The same; lateral view. X 47. 



3. First antenna of the same stage. X 86. 



4. Second antenna. X 86. 



5. Anterior lip X 86. 



6. Posterior lip. X 86. 



7. Mandibles, witli the adductor muscle. X H3. 



8. First maxilla. X H3. 



9. Second maxilla. X 113. 

 10. First maxilliped. X 1 lo- 

 ll. Second maxilliped. X 86. 



12. Third maxilliped. X 86. 



13. Part of the ventral face just behind the maxilli- 

 peds, showing the first trace of the anterior leg; 

 lateral view. X H3- 



14. Same part of an intermediate stage, with all the 

 legs formed; (the 2nd leg is hidden between the 

 2 anterior ones). X 113- 



15. Caudal plate of 1st stage, viewed from the ven- 

 tral face. X 86. 



16. First antenna of the last larval stage. X 62. 



17. Second antenna of the same stage. X 62. 



18. Extremities of the mandibles. X H3. • 



19. First maxilla. X 86. 



20. Second maxilla. X 86. 



21. First maxilliped. X 86. 



22. Second maxilliped. X 62. 



23. Third maxilliped. X 62. 



24. Legs of the left side, in situ. X ^- 



25. A pleopod. X 62. 



