ACT .EON. 157 



A more slender form than others of this region. The synonymous 

 A. nitidus is represented by fig. 4, of pi. 19. Figs. 5, 6 represent a 

 specimen dredged by the Hirondelle, off Azores. 



A. PUNCTOSTRiATus Adaius. PI. 19, figs. 22, 23; pi. 18, figs. 98, 



99. 



They vary from pure white to trifasciate with rose or livid brown, 

 usually faint and nebulous. The height of the spire, elevation of 

 the nucleus, and extent of shell covered by the punctate lines, vary 

 in the different specimens. Usually the spire is rather elevated, 

 nucleus somewhat depressed, and the punctate grooves cover about 

 half of the last whorl. There may be one or several subsutural 

 lines, the middle of the whorl is generally smooth and free from lines, 

 and the anterior part crowded. The northern ones are variegated 

 like those from the Antilles, but the latter are more frequently 

 bright colored. The very young, like those figured by Adams and 

 Orbigny, are usually white or translucent. The colors, when banded, 

 are nearly always rather nebulous, and the number of bands never 

 exceeds three, the anterior one most often absent. The shell is 

 is always thin, and often nearly translucent. (DaW). 



Alt. 3-6 mill. 



Buzzard^ s Bay, Mass., to Florida, Cuba and Sun Domingo, 2-63 

 fms. 



Tornatella pundostriata C. B. Ad., Bost. Journ. N. H. iii, p. 323, 

 pi. 3, f. 9, 1840.— Gld., Inv. Mass. p. 245, f. 188, 1841 ; edit. Bin- 

 NEY, p. 224, {. 515, 1870. — Rve., C. Icon, xv, pi. 4, f 17. — Ada^on 

 Jo«ndos^?•m^»s Stimp., Shells of N. Engl., p. 51,1851. — Verrill, 

 Inv. Anim. Vineyard Sd., p. 664, pi. 25, f 165, 1874 ; Trans. Conn. 

 Acad, vi, p. 467, pi. 45, f 17 (van). — Dall, Rep. Blake Gastr., p. 

 40. — Ada^on cubensis Gabb, Top. Geol. San Domingo, p. 245, 1873. 

 — MoRCH, Mai. Bl. xxii, p. 170, 1875. — Tornatella jnmdata Orb., 

 Moll. Cuba i, p. 230, pi. 17, f 10-12, 1842 (not of Lea nor Pictte). 



The synonymous T.jmndcda Orb. is represented on pi. 18, fig. 98, 

 99. 



A. TURRiTUS Watson. PI. 20, figs. 29, 30. 



Shell strongish, oblong, pale yellow, translucent, somewhat glossy, 

 with a high conical coarsely tipped spire and rounded striated 

 whorls. Sculpture: Longitudinals — there are many feeble lines of 

 growth. Spirals — the surface of the shell is scored with narrow 

 shallow, irregular, unequal, distant furrows formed by hardly con- 



