1869.] 135 [Perkins. 



Nauta elongata Morse, Journ. Port. Soc. Nat. Hist., Vol. i, p. 44; 

 Physa elongata Say, Am. Conch., p. 68, 1821 ; Gould, Invert. Mass., 

 p. 214, fig. 143 ; De Kay, Moll. N. Y., p. 81, pi. xxxvi, fig. 346 ; 

 Aplexus Jiypnorum Chenu, Man. Conch., Vol. I, p. 481, fig. 3555. 

 Rare. 



Anctlus GeofFr., 176 7. 



Aneylus fuscus Adams, Bost. Journ. Nat. Hist., Vol. in, p. 

 329, pi. iii, fig. 17; Gould, Invert. Mass., p. 224, fig. 152; Binney, 

 Shells of N. A., pt. II, p. 140, fig. 203. 



Rather common. Animal flesh-color mottled with black; tentacles 

 long, slender, cylindrical, broad just at the base, bearing the eyes on 

 their inner bases; hyaline white, with a black line through the centre; 

 rostrum somewhat bilobed ; foot oblong-oval, rather large ; branchial 

 plume triangular on the left side. 



MEASUREMENTS. 



Length of shell 7.8 mill. Breadth 5.4 mill. Height 1.8 mill. 



" foot 4.4 " " 3 " 



" tentacles 2.6 " 



" branchial plume 2.2 " 



Aneylus rivularis Say, Am. Conch., p. 60, 1817; Gould, In- 

 vert. Mass., p. 224, fig. 153 ; Binney, Shells of N. A., pt. n, p. 142, 

 fig. 238. 



Not common. 



TORNATELLIDiE. 

 Tornatella Lam., 1812. 



Tornatella puncto-striata C. B. Adams, Bost. Journ. Nat. 

 Hist., Vol. in, p. 323, pi. iii, fig. 9; Gould, Invert. Mass., p. 245, fig. 

 188; De Kay, Moll. N. Y., p. 127, pi. vii, fig. 143. 



Not common. Occurs dead on the beach with Bulla. 



CYLICHNID^E. 



Cylichna Loven, 1846. 



Cylichna oryza Stimps., Check List. Bulla oryza Totten, Am. 

 Journ. Sci., Vol. xxviii, p. 35 ; Gould, Invert. Mass., p. 168, fig. 93; 

 De Kay, Moll. N. Y., p. 18, pi. xxxv, fig. 327. 



Very Tare. Occurs dead on the beach. 



