198 HISTORY OF BRITISH CRUSTACEA. 



Podocercs pelchellus. — Eye-bearing lobes prominent ; 

 rings of the back without teeth. Hands of second pair of 

 le^rs verv large, and armed beneath with two rounded teeth. 

 White, varied with reddish. 



South coast of England, and Berwick (Dr. Johnston) ; 

 Swansea (Mr. Spence Bate) ; Banff (Mr. Edwards) . 



Gen. 95. JASSA, Leach 



Eyes not prominent. The four front legs with ovate 

 hands ; the second pair larger, the inner edge armed with 

 spines. 



Mr. Spence Bate believes that this genus is founded 

 merely on females of the preceding. 



Jassa pelagica, Leach. Bell Rock Screw. (Plate X. fig. 

 S.) — Body ash-coloured, varied with brown; the hand of 

 second pair with its inner edge notched in a lunar form. 



Pound on the Bell Puock by Mr. Stevenson, the engineer, 

 when superintending the erection of the lighthouse. 



Jassa falcata, Montagu. Montagu's- RocJc Scre?v. — Body 

 crimson or mottled, with a mixture of white. Hands of 

 second pair of legs with two spines on the inner edge. 

 Length five lines. 



