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TRANSACTIONS LIVEBPOOL BIOLOGICAL SOCIETY. 



obtained from the deeper water outside the bay by 

 dredging. Our authority on the Amphipods and Isopods 

 and all higher Crustacea is Mr. A. 0. Walker, a member 

 of the Committee. 



The highest Crustacea, such as crabs and lobsters, 

 shrimps and prawns, are known as Decapoda because they 

 have 10 large or conspicuous legs or claws, 5 on each side 

 of the body. There are also about 14 other pairs of much 

 smaller legs, jaws and feelers which are not so conspicuous. 



Fig. XV. 



Figure XV. shows (2) the common shrimp (Crangon 

 vulgaris) and (1) one of our common prawns (Pandalus 

 annulicornis). Shrimps are nocturnal animals, lying for 

 the most part during the day buried in sand with only the 

 tips of the stalked eyes and the long delicate feelers pro- 



