PLATE I. 



Fig. i. Hymenosoma orbiculare Desmarest, <ƒ, magn. 2. 



Fig. 2. Halicarcinus planatus (Fabricius), cT> magn. 2. Fig. 2a, dactylus of last pair of walking legs, magn. io. 



Fig. 3. Hymenïcus edwardsi Filhol. (ƒ, magn. 3. Fig. $a anterior part of carapace, magn. 10. Fig. 3^external 



maxilliped, magn. 10. Eig. 3c abclomen, magn. 10. 

 Fig. 4. Elamena truncata (Stimpson), cT, magn. 3. Fig. 4a ventral view of anterior part of carapace, magn. 10. 



Fig. 4b. Q, magn. 3. Fig. 4c dactylus of last pair of walking legs of the Q, magn. 10. 

 Fig. 5. Elamenopsis lineata A. Milne-Edwards, cf, magn. 7. Fig. $a chela, outer view, magn. 15. Fig. 5^ 



external maxilliped, magn. 25. Fig. $r abdomen, magn. 15. 



