368 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [6623 



TRACHYDERMON RUBER Carpenter. Plate XX V, fig. 166. 



Chiton ruber Lowe, Zool. Journ., vol. ii, p. 101, Plate 5, fig. 2 (t. Gould) ; Gould, 

 Invert., ed. i, p. 149, fig. 24; ed. ii, p. 260, fig. 523. Leptoclnton rnber H. and 

 A. Adams, Genera, vol i, p. 473 ; this Report, p. 399. 



Off* New London, Connecticut, to the Arctic Ocean and northern 

 coasts of Europe. Bare and local in the colder outer waters south of 

 Cape Cod. Off New London, 8 fathoms ; off Watch Hill, 5 fathoms. 

 Stonington (Linsley). Very common in Casco Bay and Bay of Fundy, 

 from low- water mark to 40 fathoms. 



Dr. Carpenter assures me that this species should be referred to 

 Trachydermon. 



Liusley records " Chiton fulminatus Couth/ 7 (= C. marmoreus Gould r 

 Invert., ed. ii, p. 261, fig. 524) as from cod-fish taken off Stoniugton, Con- 

 necticut, but as it has not been confirmed from south of Cape Cod, this 

 must be regarded as a doubtful identification. This species is found 

 from Massachusetts Bay northward to the Arctic Ocean and northern 

 coasts of Europe. It is common in the Bay of Fundy, from low- water 

 mark to 40 fathoms, on "nullipore" (Lithothamnion). 



" Chiton dibits' 7 ( = Trachydermon albus, t. Carpenter) has been men- 

 tioned as from this region, but probably erroneously. White specimens 

 of C. apiculata are often mistaken for it, when superficially examined. 

 The genuine albus is a northern species, with about the same distribution 

 as the preceding. It is abundant in the Bay of Fundy, from low-water 



to 80 fathoms. 



PULMONATA. 



MELAMPUS BIDENTATUS Say. Plate XXV, figs. 169, 169. (p. 463.) 



Journal Acad. Nat. Sciences, Philadelphia, vol. ii, p. 245, 1822 ; Gould. Invert., ed. 

 ii, p. 467, fig. 721. Auricula bidcntata Gould, Invert., ed. i, p. 117, fig. 131. Mc- 

 lampus corncns Stimpson, Shells of New England, p. 51, 1851. 



Massachusetts Bay to Florida, and along the northern shores of the 

 Gulf of Mexico to Texas. Very common on the shores of Vineyard 

 Sound, Buzzard's Bay, Long Island, and Long Island Sound. Fossil in 

 the Post-Pliocene of South Carolina. 

 ALEXIA MYOSOTIS Pfeiffer. Plate XXV, fig. 168. (p. 383.) 



Pfeiffer, Mon. Auric. Viv., p. 148, (t. Binney) ; Gould, Invert., ed. ii, p. 463, iigs. 

 718, 719. Auricula myosotis Draparnaud, Tabl. Moll. Fr., p. 53. Auricula den- 

 ticulata Gould, Invert., ed. i, p. 199, fig. 129 (MOW Montfort). 



New Jersey to Nova Scotia; also on the Atlantic and Mediterranean 

 coasts of Europe. It is common at Eastport, Maine ; Portland, Maine; 

 and at the mouth of West River, near New Haven, Connecticut; also 

 near New York City. 



TECTIBRANCHIATA. 



BULLA SOLITARIA Say. Plate XXV, fig. 161. (p. 371.) 



Journal Acad. Nat. Sciences, Philadelphia, vol. ii, p. 245, 1822; Binney's Say, p. 

 84 ; Gould, Invert., ed. i, p. 162, fig. 92; ed. ii, p. 222, fig. 513. Bulla insculpttt 

 Totten, American Journ. Science, vol. xxviii, p. 350, fig. 4, 1835. 



Massachusetts Bay to South Carolina. Common in the muddy lagoons- 



