and of its Dep< nd\ ncu s. 407 



The bark stripped from the piles of a pier al Greenport, to- 

 gether with the abundant growth of Tubularia larynx (some- 

 times a foot long) which covered it, furnished tin- following 

 species. As a considerable number of piles were Btripped, from 

 low-water mark to the depth of two feet, the relative numbers 

 of the different «species may probably be taken as cornet. 



The list above was made in summer (August or September). 

 An examination of the same pier in November gave specimens 

 of Nassa trivittata, Nassa obsoleia, and Littori/na rudis^ in ad- 

 dition to the above, while none were found of Pit urotoma 

 plicatum or Cerithiqpsis terebdlurri. 



JULY, 1870. 27 Ann. I yc. Nat. Hi-i . VOL. IX. 



