174 TORNATELLINA. 



is, we believe, a variation occurring in conica colonies, not a 

 distinct race. The peripheral impression is rather an old- 

 age character in this family. As the name conica is preoccu- 

 pied in TornatelUna, the present species may be called T. im- 

 pressa, and the typical form of conica Mouss. may be known 

 as T. impressa var. normalis P. & C., n. n. The original 

 account of T. conica follows. 



T. conica Mousson (pi. 34, figs. 5, 6). Shell imperf orate, 

 elongate-conic, pellucid, slightly striatulate, glossy, corneous. 

 Spire regular, conic, the apex rather acute; suture simple, 

 impressed. Whorls 5 to S 1 /^, rather convex, the last not de- 

 scending, rather sw r ollen above, rounded, less so in the middle. 

 Aperture a little oblique (25 degrees with the axis), two- 

 sevenths the total length, oval, provided with an acute, enter- 

 ing, median parietal lamella. Peristome unexpanded, sub- 

 acute, the margins not approaching, right margin curved 

 more above and below than in the middle, basal regularly 

 curved, columellar margin expanded and adnate above. Colu- 

 mella formed of a narrow, subvertical, twisted thread, which 

 passes into the basal margin. Length 2.9, diam. 1.5 mm. 

 (Mouss.). 



Samoan Is. : Upolu ; Tutuila, common under dead leaves, 

 chiefly of palms (Dr. E. Graeffe, type loc.). Fiji Is.: Kana- 

 thia and Vanua-Balavo, Lomma-lornim'a (Graeffe). Tonga Is. : 

 Lifuku, island of Hapai (Graeffe). Hervey and Austral Is. 

 Ellice Is. : Funafuti, Vai-Tupu, Niutao, Nui, Nukufetau (Dr. 

 Graeffe). Society Is. : Huaheine. Marquesas ( Garret!) . 



TornatelUna conica, Mousson, Journ. de Conchyl., 1869, p. 

 342, pi. 14, fig. 8; 1870, p. 128 (Viti Is.), with var. impressa, 

 1871, p. 16 (Tonga Is.); 1873, p. 106 (Ellice Is.). Pease, 

 Proc. Zool. Soc., 1871, p. 473. Pfeiffer, Mon. Hel., viii, p. 

 316. Garrett, Proc. Acad. Nat. Sci. Phila., 1879, p. 21 (Eu- 

 rutu) ; 1887, p. 136 (Samoan Is.) ; Journ. Acad. Nat. Sci. 

 Phila., 1881, p. 399 (Hervey Is.) ; ix, 1884, p. 81 (Society 

 Is.) ; Bull. Soc. Malac. France, iv, 1887, p. 29 (Marquesas) ; 

 P. Z. S., 1887, p. 187 (Viti Is.). Schmeltz, Cat. Mus. Godeff., 

 v, p. 89. 



In the shape of the shell and strongly convex whorls, this 



