154 FAUNA OF NEW ENGLAND. 



Mass.— Katama Bay, Oct. 31, 1900; Buzzards Bay, Oct. 11, 

 1906; New Bedford; Westport, Lamberts Cove; Tarpaulin Cove; 

 Robinsons Hole and Menemsha Bight (Sumner, Osbum, and Cole). 



PLEUROBRANCHAEIDAE. 



Pleurobranchaea tarda Verrill. 



Verrill, Amer. Journ. Sci., 1880, ser. 3, vol. 20, pp. 392, 398. 

 [south of Marthas Vineyard.] Verrill, Trans. Conn. Acad., 



1882, vol. 5, p. 546, pi. 58, fig. 26. 



Mass. — South of Marthas Vineyard, 28 to 250 fathoms, abun- 

 dant in 45 and 69 fathoms. 



R. I.— South of Block Island, 38 fathoms. 



Koonsia obesa Verrill. 



Verrill, Trans. Conn. Acad., 1882, vol. 5, p. 545. " off Martha's 

 Vineyard." Verrill, Rept. U. S. Comm. Fish and Fisheries for 



1883, 1885, p. 571, pi. 28, fig. 107. Pilsbry, Manual Conch., 1895, 

 ser. 1, vol. 16, p. 222, pi. 74, fig. 94. 



Mass. — Marthas Vineyard, 192 to 258 fathoms. 



PTEROPODA. 

 Superfamily Thecosomata. 



LIMACINIDAE. 



Limacina retroversa (Fleming). 



Pelseneer, Rept. Voy. Challenger, Zool., 1888, vol. 23, art. 1, 

 p. 27. 



Fusus retroversus Fleming, Mem. Wern. Nat. Hist. Soc, 1823, 

 vol. 4, p. 498, pi. 15, fig. 2. " Noss Island, Zetland." 



Hetcrofusus retroversus Gould, Inv. Mass., 1870, p. 505, pi. 27, 

 figs. 345-348. 



Heterofmus balea Gould, Inv. Mass., 1870, p. 505, pi. 27, fig. 349. 



