INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 673 



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



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

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

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



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

 oif Block Island, 29 fathoms ; Buzzard's Bay ; Yinevard Sound ; Casco 

 Bay; find 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 Yirginia and South Carolina; and in 

 the Pliocene of South Carolina. A closely-related form, C. era ssi dens 

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



Periploma papyracea Yerrill. Plate XXYII, fig. 197. (p. 509.) 



Amer. Journal Science, vol. iii, pp. 213, 285, Plate 7, figs. 1, l^, 1^ (animal and 

 hinge), 1872. Anaiina jjapyratia Say, op. cit., p. 3l47l822. Anaiina papijracea 

 Gould, Invert, ed. i, p. 47, fig. 28; ed. ii, p. 66, fig. 382. Anaiina fragilis 

 Totten (name provisional), Amer. Jour. Science, vol.xxviii,p. 347, fig. 1, 1835. 



Xew Jersey to Labrador. Anticosti Island (A. E. Y.) ; not uncommon 

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

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

 {A.. S. Packard); Newport, Khocle 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. Couthouyl Stimpsou (see Plate XXYII, fig. 196), 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 XXYII, fig. 193. (p. 118.) 



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

 p. 22 ; Gould, Invert., ed. i, p. 49, figs. 29, 30 ; ed. ii, p. QS, fig. 333. Anaiina 

 Leana Conrad, Jour. Acad. Nat. Sciences, vol. vi, p. 233, Plate 11, fig. 11, 1831. 



Xorth Carolina to the Gulf of Saint Lawrence. Yineyard Sound and 

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

 Eastport, Maine, rarel}' obtained alive; banks off Xova Scotia (Willis) ; 

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

 C. antiqiiatum (PeripJoma antiquata Conrad), occurs in the Miocene of 

 Yirginia. 



Thracia Co:sRADi Couthouy. (p. 426.) 



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

 ed. i, p. 50; ed. ii, 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. Yineyard Sound, 6 to 8 fath- 

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

 ert, Maine, 3 to 8 fathoms. Eastport, Maine, in 6 fathoms, and Grand 

 Menan (Stimpson) ; Xahant, Massachusetts (Haskell) ; Ebode Island 

 S. Mis. 61 13 



