GASTEROPODA. oe 
PaLuDINA DEcISa, Say. Gould, 227. 
Amnicoua porata, Gould, 229, f. 157. 
A. pauuipa, Hald.— Vermont. Conn. 
VALVATA TRICARINATA, Say. Gould, 225, f. 156. 
V. sincera, Say. Adams, in Thomps. Hist. Vermont. 
V. puporDEA, Gould, 226, f. 155. 
LITTORINID. 
Lirrortna rupis, Gould, 257. Nerita littorea, O. 
Fabr. Turbo rudis, Don. TT. tenebrosus, Mont.  T. 
obligatus, Say. TT. vestitus, Say. L. Grinlandica, 
Moll. LZ. tenebrosa, Forbes. Gould.— Litt. Whole 
Coast. I follow Clark, (An. and Mag. Nat. Hist., 
2d Ser., 362,) in considering the various forms to 
which the synonymes apply as varieties. 
L. titrorauis, F. et H. Nerita littoralis, L. Turbo 
palliatus, Say. LL. palliata, Gould, 260, f.177*. LZ. 
neritoides, Dekay. — Litt. Whole Coast. 
L. rrrorata, Gray. Turbo irroratus, Say, July, 1822. 
Phasianella sulcata, Lam. Aug., 1822. Ravenel, Cat. 
— Litt. Connecticut. 
Lacuna vineta, Turt. Gould, 262, f. 178%. Turbo di- 
varicatus, O. Fabr. (non L.) T. vinctus, Mont. — 
Litt. amin. Whole Coast. 
L. nertromea, Gould, 263, f. 170.— Litt. Lamin. 
Whole Coast. 
Rissoa minuta, St. Turbo minutus, Tott. Cingula mi- 
nuta, Gould, 265, f. 171. — Litt. Whole Coast. 
R. mopesta, St. Cingula modesta, H. C. Lea, Bost. 
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