INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 661 

 RHIPIEOGLOSSA. 



Margaeita obscura Gould. Plate XXIY, fig. 156. (p. 508.) 



Invert., ed. i, p. 253, fig. 171'', 1841; ed. ii, p. 283, fig. 545. Tiirho ohscunis Cou- 

 thouy, Boston Journ. Nat. Hist., vol. ii, p. 100, Plate 3, fig. 2, 1838. 



StoniDgton, Oonnecticat, to Labrador. Eare aud confined to the outer 

 waters south of Cape Cod ; off Martha's Vineyard, 20 to 25 fathoms. 

 Stoningtou, from haddock's stomach, (Linsley). Common in Massachu- 

 setts Bay, Casco Bay, and in the Bay of Fundy, from extreme low- 

 water mark to 100 fathoms. East of Saint George's Bank, in 430 fath- 

 oms, (S. I. Smith). . 



Margarita ornata Dekay, N. Y. Mollusca, p. 107, Plate 6, fig. 101, 1813, 

 was described as occurring in the vicinity of ISTew York, but I have not 

 met with it in Long Island Sound. 



DOGOGLOSSA. 



ACM^A TESTUDiNALis Forbes and Hanley, Plate XXIY, figs. 159, 

 159^. (p. 307.) 



British Mollusca, vol. ii, p. 434, Plate 62, figs. 8, 9, and Plate A A, fig. 2 ; Car- 

 penter, Report of British Association for 1856, pp. 219, 366, 1857 j Dall (sub- 

 genus, Collisella Dall), American Journal of Couchology, vol. vi, p. 249,1871. 

 Lottia testadinalis Gould, Invert., erl. i, p. 153, fig. 12. Tectura testudinaUs 

 Gould, Invert., ed. ii, p. 267, fig. 529. Patella testudinaUs Miiller, Prodromus 

 Zool. Danica, p. 227, 1776. 



Variety alveus. (fig. 159 a). Patella alveus Conrad, Journal Acad. Nat. Sciences, 

 Philadelphia, vol. vi, Plate 11, fig. 20, 1831. Lottia alveus Gould, Invert., ed. 1, 

 p. 154, fig. 13. Tectura alveus Gonld, Invert., ed. ii, p. 269, fig. 530. 



Long Island Sound to the Arctic Ocean ; circumpolar. It extends 

 southward on the European coasts to Southern Sweden, England, and 

 Ireland; in the Xorth Pacific, southward to Sitka and the Island of 

 Jesso, Japan. It is comparatively rare and local south of Cape Cod ; 

 at Xew Haven, very rare ; Watch Hill, Ehode Island ; Martha's Vine- 

 yard, Cuttyhunk, and adjacent islands. Huntington and Greenport, 

 Long Island (S. Smith). Fossil in the Post-Pliocene of Labrador (Pack- 

 ard) ; Greenland, Scandinavia, and Great Britain. 



POLYPLACOPHORA. 



Ch^i^topleura apiculata Carpenter. Plate XXV, fig. 167. 



Chiton apiculatus Say, Amer. Conch., part vii, appendix, (?) 1834 ; Binney's Say, 

 p. 231 ; Gould, Invert., ed. i, p. 146, fig. 20 ; ed. ii, p. 258, fig. 522. Lepto- 

 ckiton apiculatns, this Report, x>. 399. 



Cape Cod to Eastern and Western Florida. Common in Vineyard 

 Souud and Buzzard's Bay, in 3 to 12 fathoms, shelly. Off Xew Lou- 

 don, Connecticut (coll. T. M. Prudden). 



Dr. P.P. Cari)enter informs me that tliis species belongs to the genus 

 Chwtopleura of Gray (non Adams). 



