Plate IV. 



Fig. 15. Uca pugilator. 



Fig. 16. Claw of Uca pugilator. 



Fig. 17. Uca pugnax. 



Fig. IS. Claw of Uca pugnax. 



Fig. 19. Uca minax. (reduced.) 



Fig. 20. Planes minutus. 



Fig. 21. Pinnixa sayana. 



