PASIPKffiA. 137 



Gen. 46. PASIPH^A, Sawgny. 



Beak very short and simple ; the carapace much narrower 

 in front than behind ; peduncle of inner antenna? slender 

 and ending in two many-jointed threads. First and second 

 pairs of legs two-toed, rather stout, and nearly of equal 

 length, armed with spines on their third joint ; the three 

 following pairs of legs very slender, one-toed, and more or 

 less adapted for swimming; the fourth pair generally the 

 shortest. Abdomen much compressed on the sides, and 

 very long ; the false legs of the first ring end in a single 

 plate, the four following pairs have each two short swim- 

 ming plates. 



Pasiph^ea sivado, Eisso. Sword Shrimp. — Outer plates 

 of the tail-fin much longer than the inner pair, which are 

 longer than the central piece. 



Pound at Bridge water by Mr. Baker, and off the Irish 

 coast by the Eev. J. Bulwer. Specimens from the British 

 Channel were sent to Professor Bell by Mr. Baker, and two 

 were found by Mr. M' Andrew in the Irish Channel, which 

 he gave to Professor Bell. 



This Shrimp is very much compressed, and the body, 

 when alive, is white and transparent, each joint being 



