GASTEROPODA. 121 



Littorina litorea Gould, Inv. Mass., 1870, p. 308, fig. 577. 



Me. to Conn. — This species, now common along the entire 

 coast, first appeared on the coast of Maine in 1871. 



*Litorina obtusata palliata (Say). 



Turbo paUiaius Say, Journ. Acad. Nat. Sci. Phila., 1822, ser. 1, 

 vol. 2, p. 240. " New England." 



Littorina palliata Gould, Inv. Mass., 1870, p. 309, fig. 578. 



Littorina obtusata palliata Dautzenberg and Fischer, Journ. de 

 Conch., 1915, vol. 62, p. 107, pi. 2, fig. 4. 



Me. to Conn. — Common on the rocks between tides. 



*Litorina rudis (Donovan). 



Turbo rudis Donovan, Brit. Shells, 1804, vol. 1, pi. 33, fig. 3 

 and explanation. " Devonshire, [England]." 



Littorina rudis Gould, Inv. Mass., 1870, p. 304, fig. 575. 



Me. to Conn. — Common on the rocks of the ocean shore. 



*Litorina rudis tenebrosa (Montagu). 



Turbo tenebrosus Montagu, Test. Brit., 1803, p. 303; Suppl., 

 1808, pi. 20, fig. 4. " Devonshire * * * Kent [England]." 

 Littorina tenebrosa Gould, Inv. Mass., 1870, p. 306, fig. 576. 



Me. to Conn. — Common about wharves, bridges and upon the 

 salt marshes. 



Litorina irrorata (Say). 



Turbo irroratus Say, Journ. Acad. Nat. Sci. Phila., 1822, ser. 1, 

 vol. 2, p. 239. [New Jersey to Florida.] 



Littorina irrorata Gould, Inv. Mass., 1870, p. 311, fig. 579. 



Mass. — Vineyard Sound. 



*Lacuna vincta (Montagu). 



Gould, Inv. Mass., 1841, p. 262, fig. 168. 



