[>;:>] INVERTEBRATE ANIMALS OF VINKYAK'I) SOUND, ETC, 



"in usually nearly straight for at least Iiali'its length, somel imcs ;i little 

 convex and gradually sloping throughout. Surface with fine, sonn-v. 

 irregular, concentric strife, slightly iridescent. ( 1 o!or white, witli the 

 uinbos purple. Length, 4""" ; height, 2.5""". 



Long Island Sound, near New Haven, 4 to G fathoms, shelly mil grav- 

 elly bottom, among hydroids and sponges (A. E. V.). 



Abra (vqiialls Say. 



American Couch., Part iii, Plate 28; outer figures, 18:31 ; Biimey's Say, ]>. 1 - .'. 

 same plate ; Stimpsou, Check-List, p. 3, I860. Amphidesma a-qualis - 

 Jouru. Acad.Nat. Sci., Philadelphia, vol. ii, p. 307, 1822 ; American Condi.. ! 

 iii, Plate 28; Biimey's Say, pp. 100,182. Semele eqiia-l'm Verrill, Amer. Jour. 

 Science, vol. iii, p. 210, 1872. 



Florida and Gulf of Mexico to Cape Hatteras ; rare and local farther 

 north. Stonington, Connecticut, from cod-stomachs (Linsley). Fort 

 Macon, North Carolina, abundant (Coues, Yarrow). Texas (KMiier). 

 Charleston, South Carolina (Say). 



The occurrence of this southern species at Stonington needs confirm' 

 ation. I have seen no specimens from north of Cape Hatteras. 



Fossil in the Miocene of North and South Carolina. 



TELLINOIDES Conrad. Plate XXX, fig. 221.' (p. 418.) 



Jonrn. Acad. Nat. Sci., Philad., vol. vii, p. 234, 1837; Gould, Invert., ed. i, p. 56, 

 fig. 36; ed. ii, p. 79, fig. 390. Mactra tettinoiilcs Conrad, Journ. Acad. Nat. 

 Sci., Philad., vol. vi, p. 258, Plate 9, figs. 2, 3, 1831. 



Cape Cod to Florida. Common in Vineyard Sound and Buzzard's 

 Bay, 3 to 12 fathoms ; Long Island Sound, less common. Fort Macou, 

 Xorth Carolina (Coues, Yarrow). Florida (Conrad). Fossil in the Post- 

 Pliocene of Nantucket Island, South Carolina, and North Carolina ; in 

 the Pliocene of South Carolina ; and in the Miocene of Virginia and 

 South Carolina. 



CERONIA ARCTATA Adams, (p. 426.) 



H. and A. Adams, Genera, vol. ii, p. 414, 1858; Gould, Invert., ed. ii, p. 80, Jig. 

 391. Macli'<t (trctafa Conrad, Journ. Acad. Nat. Sci., Philad., vol. vi, p. 257, 

 Plate 11, fig. 1, 1831. Mesodesma arctata Gould, Invert., ed. i, p. 57, fig. 39. 



Long Island to Kiver Saint Lawrence. Stoniugton. Connecticut 

 (Linsley). East Hampton and Montauk, Long Island (S. Smith). Xan- 

 tucket (Gould). Common in Massachusetts Bay; Casco Bay, and East. 

 port, Maine, rare. Xova Scotia (Willis). 



Donaxfossor Say. 



Journal Acad. Nat. Sciences, Philadelphia, vol. ii, p. 306, 1822 ; Biimey's Say, pp. 

 99, 226, Plate 61, fig. 2. 



This species may possibly occur occasionally on the Southern New 

 England coast, but I am not aware of any authentic instances. I have 

 found it quite common living on the outer beach at Great Egg Harbor, 

 Xew Jersey, and it has been found as far north as the southern side of 

 Long Island. 



