70 



A CORNISH FAUNA. 



It ranges from ours and the Irish coast to the Mediterranean 

 sea, where it was first observed by Risso at Nice. 



Portunus longipes. — Risso. — Milne Edwards^ Hist. des. Crust., 

 t I, p. 445. 



Portumis dalyelii. — Spence Bate, Ann. Nat. Hist., 1851, p. 

 320, t xi, fig. 9. 



This species was taken first of? the coast of Cornwall, by 

 Prof. Ed. Forbes and Mr. McAndrews, and afterwards at Fal- 

 mouth by Mr. Cocks, and at Penzance by Mr. P. Q. Couch. 



Professor Bell says that it is doubtless the same species as that 

 described as P. dalyelii, I. c. by Spence Bate in the Ann. Nat. Sis. 

 for 1851, which he took off the coast of South Wales. But cer- 

 tainly the Welsh species is more pronounced in its character 

 than the figure given by Prof. Bell. 



Portunus marmoreus . — Marbled Crab. — Leach, Malac, pi. t viii; 

 Milne Edwards, Hist des Crust., 1 1, p. 442. 

 Cancer Depurator. — Pennant, pi. 2, fig. 6. 



This species receives its name from the beautifully coloured 

 and variegated carapace, which is more conspicuous in the males 

 than in the females. 



Portunus hols altts. — Livid Swimming Crab. — Fair. Milne 

 Edwards, Hist. des. Crust., t. i, p. 442; BelVs Brit. Stalk- 

 Eyed Crust., p. 109 ; Couch' 's Cornish Panna, p. 72. 

 Portunus lividus. — Leach, Brit. Malac, pi ice, fig. 3-4. 

 Bell says i.e., p 110. " The occurrence of this crab is ex- 

 tremely rare on our coasts. Dr. Leach had only seen one prior 

 to the publication of his work, but there is now a fine series in 

 the collection of the British Museum." 



Portunus corrugatus. — Wrinkled Swimming Crab. — Leach, 

 Malac. Brit., t. viii; Pennant, pi. 5, fig. 9; Bell, Stalk-Eyed 

 Crust., p. 94. 



Scarce. Bell says that it must be considered as one of the 

 rarer species of the Genus. Leach mentions specimens as having 

 been taken by Mr. C. Prideaux, in Plymouth Sound, and Mr. 

 Bell has had a fine female specimen from the same locality. 



It has been found as far north as Skye, and it is recorded 

 from Carrickfergus, Dublin Bay, and Cork Harbour, in Ireland, 

 and Berwick Bay on the Eastern Coast of England. Milne 



