14 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



subdivision. Delia Valle groups all the Gammaridea into only 

 ten families. Sars recognizes twenty-five families in the Nor- 

 wegian fauna alone ; Stebbing in the " Challenger " Report 

 divided the Gammaridea into twenty-six families and in his later 

 work on the Gammaridea, 1906, he recognizes forty-one families. 

 I have followed pretty closely Stebbing's later classification 

 in this paper and have attempted no revision of the group 

 whatever. 



