INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 695 



yard and Buzzard's Bay, 20 to 25 fathoms, rare; Gasco Bay, 15 to 95 

 fathoms, not common ; Bay of Fundy, 10 to 100 fathoms, frequent. 

 Saint George's Bank (S. I. Smith, A. S. Packard). Gardiner's Bay, 5 

 fathoms, one specimen, (S. Smith). Off New London, Connecticut (T. 

 M. Prudden). Gulf of Saint Lawrence (Whiteaves). Murray Bay 

 (Dawson). Nova Scotia (Willis). Labrador (Packard). Arctic Ocean, 

 near Behring's Straits, 30 fathoms, (Stimpson, N. P. Expl. Exp., 

 t. Gould). 

 Fossil in the Post-Pliocene of Canada (Dawson). 



Crenella g-landula Adams. Plate XXXI, fig. 233. (p. 418.) 



H. and A. Adams, Genera, vol. ii, p. 515, 1858; Gould, Invert., ed. ii, p. 194, fig. 

 492. Modiola glandala Totten, American Journal Science, ser. i, vol. xxvi, 

 p. 367, figs. 3, e, f, g, 1834; Gould, Invert., ed. i, p. 131, fig. 87 (pars). Mytilus 

 decussatus Stimpson, Shells of New England, p. 11, 1851, (non Montagu, sp.) ; 

 Dekay, op. cit., p. 186, Plate 22, fig. 248. 



Connecticut to Gulf of Saint Lawrence. Buzzard's Bay and Yiueyard 

 Sound, 5 to 15 fathoms, not uncommon ; off Gay Head, 19 fathoms, soft 

 mud; off Block Island, 29 fathoms, sandy mud; common in Massa- 

 chusetts Bay, Casco Bay, and Bay of Fundy, 3 to 60 fathoms. Halifax 

 (Willis). Gulf of Saiut Lawrence, at Gaspe (Whiteaves). Gardiner's 

 Bay, Long Island (S. Smith). Stonington (Linsley). Off New London, 

 Connecticut (T. M. Prudden). Sandy Hook, New Jersey (Fergu- 

 son). Fossil in the Post-Pliocene at Montreal, Canada (Dawson). A I 

 related species, G. cequilaterata Conrad (H. C. Lea, sp.) occurs in the 

 Miocene of Virginia. . ' 



This species was undoubtedly confounded with G. decussata (Montagu, 

 sp.) by both Gould and Stimpson. The genuine decussata is quite com- 

 mon in Casco Bay, Bay of Fundy, and Gulf of Saint Lawrence, and is 

 usually associated in those waters with G. glandula. It is a northern, 

 and common European species, and is also recorded from the North 

 Pacific coast of America by Dr. P. P. Carpenter. It also occurs in 

 Greenland (Morch). 



MONOMYARIA. 



Pecten irradians Lamarck. Plate XXXII, fig. 238. (p. 374.) 



Anim. sans Vert., ed. i, 1819 ; ed. ii, vol. vii, p. 143 ; Gould, Invert., ed. ii, p. 199, 

 fig. 496. Pecten concentricus Say, Journ. Acad. Nat. Sci., Philad., vol. ii, p. 

 259,1822; Gould, Invert., ed. i, p. 134, fig. 88; Dekay, op. cit., p. 172, Plate 9, 

 fig. 205. 



Florida and the northern shores of the Gulf of Mexico to Cape Cod ; 

 rare and local farther north in Massachusetts Bay ; and Nova Scotia 

 (Willis). Very common in Vineyard Sound, Buzzard's Bay, shores of 

 Long Island and Connecticut, New Jersey, and southward. Tampa 

 Bay, Florida (Conrad, B. Jewett). Texas (Boeiner). 



Fossil in the Post-Pliocene of North Carolina and Tampa Bay, ( 

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



