112 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



Gammarus natator Smith is identical with this species. 



G. annulatus is likely to be confused with G. locusta but can 

 be distinguished from the latter by the absence of the lateral 

 fascicles of spines from the fourth abdominal segment, by the 

 long setae in place of fascicles of spines on the rami of the last 

 uropods, and by the different form of the gnathopods. 



Gammarus marinus Leach. 



FIG. 28. Gammarus marinus. 



1815. Gammarus marinus, Leach, Tr. Linn. Soc. London, 

 vol. n, p. 359. 



1906. Gammarus marinus, Stebbing, Das Tierreich, Lief. 21, 

 p. 472. 



Body slender and compressed. Anterior pairs of coxal plates 

 not nearly twice as deep as corresponding segments. 



