INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. G73 



Clidiophora trilineata Carpenter. Plate XXVIT, fig. 193. (p. 418.) 



Proc. Zool. Soc, London, 1864, p. 597 ; Mollnsks of W. N. America, p. 226. Pan- 

 dora trilineata Say, Jonrn. Acad. Nat. Sciences, Philadelphia, vol. ii, p. 261, 

 1822 ; Gould, Invert., ed. i, p. 44 ; ed. ii, p. 62, lig. 379. 



Florida to Gulf of Saiut Lawrence. Common in Long Island Sound; 

 off Block I.sland, 29 fathoms; Buzzard's Bay; Vinej'ard Sound; Casco 

 Bay; and Bay of Fundy ; low water mark to 30 fathoms; Great Egg 

 Harbor, Xew Jersey, 1 fathom. Beaufort, Xorth Carolina (Coues, Yar- 

 row). Fossil in the Post-Pliocene of Virginia and South Carolina ; and in 

 the Pliocene of South Carolina. A closely-related form, C. crassidens 

 (Conrad, sp.), occurs in the Miocene of Virginia. 



Pbriploma papyracea Verrill. Plate XXVII, fig. 197. (p. ;j09.) 



Anier. .Tonrnal Science, vol. iii, pp. 213, 285, Plate 7, figs. 1, 1", li^ (animal and 

 hinge), 1872. Anatina impyratia Say, op. cit., p. 314, 1822. Anaiina papyi-acea 

 Gould, Invert., ed. i, p. 47, fig. 28; ed. ii, p. 6Cy, fig. 382. Anatina fragilis 

 Totten (name xn'o^isional), Amer. Jour. Science, vol. xxviii,p. 347, fig. 1, 1835. 



New Jersey to Labrador. Anticosti Island (A. E. V.) ; not uncommon 

 in Massachusetts Bay, Casco Bay, and Bay of Fundy, 10 to 100 fath- 

 oms. Less frequent south of Cape Cod; off Block Island, in 29 fathoms, 

 (A. S. Packard); Newport, Khode Island (Totten); Greenport, Long 

 Island (S. Smith). Chateau Bay, Labrador (Packard). 



This species, when young, is liable to be confounded with Thracia 

 myopsis Beck = T.Coutkouyl Stimpson (see Plate XXVII, fig. 19G), but 

 they are easily distinguished by the structure of the hinge. The latter 

 occurs in Massachusetts Bay, Bay of Fundy, etc., northward to Green- 

 land, but has not been recorded from south of Cape Cod. 



CociiLODESMA LEANU3I Couthouy. Plate XXVII, fig. 198. (p. 118.) 



Boston Jour. Nat. Hist., vol. ii, p. 170, 1839; Stimpson, Shells of New England, 

 p. 22 ; Gould, Invert., ed. i, p. 49, figs. 29, 30 ; ed. ii, p. 68, fig. 383. Anatina 

 Leana Conrad, Jour. Acad. Nat. Sciences, vol. vi, p. 263, Plate 11, fig. 11, 1831. 



!N"orth Carolina to the Gulf of Saint Lawrence. Vineyard Sound and 

 Long Island Souud, not uncommon in 3 to 10 fathoms; Casco Bay and 

 Eastport, Maine, rarely obtained alive; banks off Xova Scotia (Willis) ; 

 Saint George's Bank (S. I. Smith and O. Harger). A related species, 

 G. antiquafum {"Feriploma antiquafa Conrad), occurs in the Miocene of 

 Virginia. 



Thracia Conradi Couthouy. (p. 42G.) 



Boston Jour. Nat. Hist., vol. ii, p. 153, Plate 4, fig. 2, 1839; Gould, Invert.^ 

 ed. i, p. 50; ed. li, p. 69, fig. 384. Thracia decJiris Conrad, Amer. Mar. Conch., 

 p. 44, Plate 9, fig. 2, 1831 (not of Pennant). 



Long Island to Gulf of Saint Lawrence. Vineyard Souud, G to 8 fath- 

 oms; Casco Bay, G to 15 fathoms; Frenchman's Bay, near Mount Des- 

 ert, Maine, 3 to 8 fathoms. Eastport, Maine, in C fathoms, and Grand 

 JMeuan (Stimpson); ISTahant, Massachusetts (Haskell); Bhode Island 

 S. Mis. 61 43 



