246 



THE LIFE OF CRUSTACEA 



fact, they do have pincers, but so minute that they 

 can only be detected by microscopic examination. 

 The feet of the second pair are unequal in length on 

 the two sides, that on the left side being the longer, 

 and are very slender. They end in small pincers, 

 and examination with a pocket-lens will show that 

 the carpus, or "wrist," and the segment below it 

 (merus) are broken up into a large number of short 



FIG. 79 THE NORWEGIAN DEEP-WATER PRAWN (Pandalus borealis), 

 FEMALE. (After Sars.) 



The second leg of the right side is indicated by dotted lines. 



segments, so that the limb is extremely flexible. 

 When alive, the animal is even more handsomely 

 marked than the Common Prawn. 



A large species of Prawn is now imported to this 

 country in considerable quantities from Norway. 

 This is Pandalus borealis (Fig. 79), a species closely 

 allied to the last-named, but differing in the longer 

 and more slender rostrum and in many other 

 characters, as well as in its larger size (specimens 



