252 HALF AN HOUR WITH CRUSTACEA. 



stalls. Its flesh, however, is much inferior in flavour 

 to that of the common lobster. 



The shrimps and prawns must not be neglected in 

 any gossip about marine Crustacea. People are 

 constantly confounding one of these with the other, 

 perhaps on account of their nearly equal size in 

 fact they commonly go by the name of " red " and 

 " brown " shrimps ! There are several species of 



Fig. 136. 



Gammarus locust a and her brood. 



prawn abundant in our seas, and two of them 

 (Pal&mon serratus and Palfemon squilla) are often 

 confounded with the shrimps. The difference, 

 however, may easily be seen, in the greater number 

 of pairs of antennae possessed by the prawn; the 

 shrimp having only two pair. Again, the prawns 

 are furnished with a prolongation of the carapace 



