SHRIMPS AND PRAWNS. 167 



round our coasts, and yet only known from a few localities, 

 because a careless observer would never see it. Like the 

 species of Leander this has a rostrum in this case quite 

 straight, a sharp point. On the upper edge there are usually 

 four teeth, but this number may be increased to five or even 

 six; on the underside they never exceed two, and there may be 

 only one. 



Whilst referring to these little-known species of Prawns, we 

 must not forget to mention the very well-known Common Shrimp 

 or the Shrimp (Crangon vulgaris], which affects sandy shores 

 and rivers rather than rocky coasts. The natural colour of the 



COMMON SHRIMP. 



Shrimp before it has been in the pot and made to reappear as 

 the Brown Shrimp, is a pale brownish grey, thickly dotted 

 with darker brown, which harmonises well with the sandy 

 flats on which it loves to live. Looking at this species we see 

 how great a finish is given to the Prawns by the possession of 

 that saw-edged rostrum. By comparison the Shrimp has a 

 square front, which is by no means so prepossessing. His 

 eyes are not so distant one from the other as are those of the 

 Prawn, and only one pair of his antennae (the external) are 

 at all long. There are three small spines on the carapace, one 

 on the middle line and one on each side. The first pair of 

 legs are stout, and what is technically described as sub-chelaie, 



