678 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



white ; often banded concentrically with these colors. The hinge-mar- 

 gin is stouter and the teeth stronger than in A. tener, and different in 

 relative size and proportions; the ligament-plate is also longer. 



Long Island Sound and Vineyard Sound ; 4 to 10 fathoms, mud and 

 sand. 



Tellina tenta Say. Plate XXX, fig. 223. (p. 432.) 



American Concliology, Part vii, Plate 65, fig. 3, 1837; Binney's Say, p. 228 ; Han- 

 ley, Recent Shells, p. 65, Plate 14, fig. 10 ; Gould, Invert., ed. i, p. 68, fig. 43 ; ed. 

 ii, p. 96, fig. 402. Tellina (Per oncea) teiita H. and A. Adams, Genera, vol. ii, 

 p. 499, 1858. 



Cape Cod to South Carolina. Vineyard Sound and Buzzard's Bay, 2 

 to 10 fathoms, mud, common ; Long Island Sound ; Great Egg Harbor. 

 Greenport, Long Island (S. Smith) ; Port Macon, North Carolina (Coues); 

 South Carolina (Say). 

 [ Fossil in the Post-Pliocene of South Carolina. 



Tellina versicolor Cozzens. 



Jay, Catalogue Shells, ed. ii, p. 12, 1836 ; Dekay, Nat. Hist. New York, Moll., p. 

 208, Plate 26, fig. 272. 



Glass House Point, near New York (Cozzens); Stratford, Connecticut 

 (Linsley). 



I have met with no shells corresponding precisely with the descrip- 

 tion of this species. 



Gasteanella Verrill. 



American Journal of Science, vol. iii, £>. 286, 1872. 



" Shell oblong, more or less irregular, and sometimes with the ven- 

 tral margin inflexecl ; pallial sinus large ; ligament external, elongated. 

 Eight valve with two small cardinal teeth ; the posterior one thin, 

 directed obliquely backward. Left valve with two cardinal teeth ; the 

 posterior one stout, bilobed ; the anterior one smaller. No distinct lat- 

 eral teeth. Animal with long, slender, separate siphonal tubes, with a 

 simple circle of papillae at the ends ; mantle well open anteriorly ; foot 

 ligulate. The curious little shell for which this genus is constituted 

 apparently resembles Gastrana more than any other described genus." 



Gastranella titmida Verrill. Plate XXVII, fig. 190. (p. 41S.) 

 American Jour. Sci., vol. iii, pp. 210, 286, Plate 6, figs. 3, 3a, 1872. 



Shell small, variable in form, swollen above, more or less elongated 

 oval, or oblong, with rounded ends, compressed posteriorly. The beaks 

 are rounded, somewhat prominent, incurved but not approximate, and 

 directed somewhat forward ; the anterior dorsal margin is deeply concave 

 in front of the beaks, but without a distinct lunule, at the anterior end 

 regularly rounded or a little prolonged, compressed ; ventral margin 

 slightly convex, or nearly straight and sub-parallel with the dorsal mar- 

 gin, or incurved, in the different specimens ; posterior end broadly 

 rounded in some, decidedly prolonged in others; dorsal posterior mar- 



