PASIPHiEA. 
137 
Gen. 46. PASIPHiEA, Savigny . 
Beak very short and simple ; the carapace much narrower 
in front than behind ; peduncle of inner antennae 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, Risso. Sword Shrimp . — Outer plates 
of the tail-fin much longer than the inner pair, which are 
longer than the central piece. 
Found at Bridgewater by Mr. Baker, and off the Irish 
coast by the Rev. J. Bulwer. Specimens from the British 
Channel were sent to Professor Bell by Mr. Baker, and two 
were found by Mr. M ‘An drew 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 
