PELECYPODA. 19 



*Arca (Scapharca) transversa Say. 



Area transversa Say, Journ. Acad. Nat. Sci. Phila., 1822, ser. 1, 

 vol. 2, p. 269. " COAST OF THE United States." Gould, Inv. 

 Mass., 1870, p. 148, fig. 456a. 



Mass.— Chatham; Buzzards Bay; Marthas Vmeyard; Nan- 

 tucket; Wellfleet. 



R. I. — Narragansett Bay; Greenwich Bay; near Watch Hill. 

 Conn. — Oflf New London; New Haven; Stratford. 



Area (Bathyarca) pectunculoides Scacchi. 



Area pectunculoides Scacchi, Test. Napolitani, 1832; Ann. Civ, 

 d. Sicil., 1836, vol. 6, p. 82. Verrill, Trans. Conn. Acad., 1882, 

 vol. 5, p. 573, pi. 44, figs. 5, 6. 



Me.— Oflf Casco Bay, 94 fathoms; Cashe's Ledge, 27 to 90 

 fathoms; Gulf of Maine, 110 to 150 fathoms. 



Mass.— Off Cape Cod, 92 to 122 fathoms; Georges Bank; south 

 of Marthas Vineyard, 76 to 506 fathoms. 



Area (Bathyarca) pectunculoides septentrionalis G. O. Sars. 



Area peetuneuloides var. septentrionalis G. O. Sars, Moll. Reg. 

 Arct. Norv., 1878, p. 43, pi. 4, fig. 2. " Hasvig [Norway.] " 



Mass.— South of Marthas Vineyard, 79 to 500 fathoms (Verrill). 



Area (Bathyarca) pectunculoides frielei Friele. 



Area frielei Friele (ex Jeffreys MS.), Nyt Mag. f. Naturv., 1877, 

 vol. 23, pt. 3, p. 2. [North Atlantic] Jeffreys, Proc. Zool. 

 Soc. London, 1879, p. 573, pi. 45, figs. 4, 4a. 



^Irca peetuneuloides wax. frielei Verrill, Trans. Conn. Acad., 1882, 

 vol. '5, p. 574. 



Mass. — South of Marthas Vineyard, 100 to 487 fathoms. 



