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



former. Orclicstia palustris prefers mud, and as it is able to 

 survive exposure to brackish or nearly fresh water, it is often 

 found in salt marshes and may find its way to some distance 

 from the shore. Delia Valle mentions O. gammarellns, in which 

 species he includes O. palustris, as occurring several kilometers 

 from the sea shore at Naples. Allorchcstcs littoralis also occurs 

 high upon the beach, according to Holmes. With these fcv. 

 exceptions, however, the Amphipoda are thoroughly aquatic. 



In New England there are only three species which occur m 

 fresh water : Crangonyx tenuis, which was found by Smith in 

 wells at Middletown, Dikcrogainiuarus fasciatus, and Hyalclla 

 knickerhockeri. 



Dredging operations have been so incomplete in the waters 

 of Long Island Sound within the bounds of the State that it is 

 impossible to generalize from these data alone. The extensive 

 observations made in the nearby waters of Vineyard Sound and 

 Buzzards Bay by Verrill and Smith and also by Sumner, Osburn, 

 and Cole may, it would seem, be extended in the most general 

 way to the shores and waters of Long Island Sound. 



The following species are known to occur at the surface and to 

 be taken in towing: 



Allorchestes littoralis Elasmof^us Icvis 



Ampelisca macroccphala Gammarus annulatus 



Amphithoc longimana G. locusta 



A. rubricafa Grubia compta 



Batca sccunda Hyperia galba 



Byblis scrrata LcptocJicirus pinguis 



Calliopius hcriuscultis Microdcutopus gryllotalpa 



Cari)iogaiiniiarus tnucronatus Paraphoxiis spinosus 



Corophiuui cylindricum Pontogcncia inermis 



Dexamine tJica 



The following species are found most commonly in eel-grass 

 and mud : 



Ainphithoe longimana Grubia compta 



A. rubricata LcptocJicirus pinguis 



Caprella gcomctrica Lysianopsis alba 



Carinogammarns mucronatns Microdcutopus gryllotalpa 

 Elasmopus Icvis 



