374 



METAMORPHOSIS 



Fig. 5. 



another crab, found abundantly on the gulf-weed off the 

 coast of America, so exactly resembles the other larvae as not 

 to require a figure ; this I have set down in the catalogue of 

 my Crustacea, (now in the possession of the Royal College of 

 Surgeons of Ireland) as Grapsus pelagicus. 



In concluding, I beg to recapitulate the genera of the 

 Brachyura, to which my proofs of metamorphosis have 

 now extended; viz. 1. Cancer. 2. Carcinus. 3. Portunus. 

 4. Macropodia. 5. Pinnotheres. 6. Gegarcinus. 7. Tliel- 

 phusa. 8. Grapsus. 9. Eriphia. 10. Porcellana (an in- 

 termediate genus.) 



Amongst the luminous Crustacea, taken in a voyage from 

 the Mauritius, is the Megalopa (fig. G) met with in the 



Fig. 6. 



Atlantic Ocean, on the 17th September, to the westward of the 

 Cape Verd Islands. 



