GASTEROPODA. 85 



GASTEROPODA. 



Sub-class STREPTONEURA. 



ASPIDOBRANCHIA. 



ACMAEIDAE. 



*Acmaea testudinalis (Miiller). 



Pilsbry, Manual Conch., 1891, ser. 1, vol. 13, p. 10, pi. 9, figs. 

 25-29. 



Patella testudinalis Miiller, Zool. Danicae Prodr., 1776, p. 237. 

 " Daniae et Norvegiae." 



Tectura testudinalis Gould, Inv. Mass., 1870, p. 267, fig. 529. 



Me.— Common along the entire coast. 



Mass. — Marblehead; Cohasset; Provincetown; Marthas Vine- 

 yard. 



R. I.— Watch Hill. 

 Conn. — New Haven, rare. 



*Acmaea alveus (Conrad). 



Patella alveus Conrad, Journ. Acad. Nat. Sci. Phila., 1831, ser. 1, 

 vol. 6, p. 267, pi. 11, fig. 20. "Massachusetts." 



Tectura alveus Gould, Inv. Mass., 1870, p. 269, fig. 530. 



Me. — Casco Bay; North Haven; Frenchman's Bay. 

 Mass. — Massachusetts Bay. 



Acmaea fergusoni Wheat. 

 Wheat, Sci. Bull. Brooklyn Inst. Arts and Sci., 1913, vol. 2, p. 17. 



" NORTH SHORE LoNG ISLAND, N. Y." 



Conn. — New Haven (Perkins), see \Mieat, Nautilus, 1913, 

 vol. 27, p. 72. 



