PODOCERIDES. 



417 



This genus appears to have a large geographical range ; 

 the species having been found both in the Arctic and 

 Antarctic Seas, as well as in the tropical regions, that is, 

 if Amphithoe Azteca of Saussure belongs to this genus, 

 which, however, from the description, appears to be 

 rather doubtful. One species is recorded by Professor 

 Say from the freshwater marshes of South Carolina, but 

 his description is not sufficiently perspicuous for us to 

 determine whether his Amphithoe dentata really belongs 

 to this genus or not. 



The accompanying vignette of Tynemouth was kindly 

 drawn for us by Miss Hancock, of Newcastle. 



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