384 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [678] 
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 Conchology, 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 (Peronwa) tenta 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 Islaud Sound ; Great Egg Harbor. 
Greenport, Long Island (S. Smith); /°ort 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, 1835; 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. 
GASTRANELLA Verrill. 
American Journal of Science, vol. iii, p. 286, 1872. 
“ Shell oblong, more or less irregular, and sometimes with the ven- 
tral margin inflexéd; pallial sinus large; ligament external, elongated. 
Right 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- 
eralteeth. Animal with long, slender, separate siphonal tubes, with a 
simple circle of papillie 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 TUMIDA Verrill. Plate X XVII, fig. 190. (p. 418.) 
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- 
