MARINE MOLLUSCA OF THE UNITED STATES. 65 
3. T. ELEGANS, Verrill. Fig. 113. 
Am. Journ. Science, 3d ser. iii. 282, t. 6. f. 4. 1872. 
Shell light yellowish, elongated, moderately slender, acute. 
Whorls ten or more, well rounded, not distinctly flattened; suture 
rather deeply impressed ; surface somewhat lustrous, with numer- 
ous rounded vertical cost, narrower than the concave interspaces, 
fading out below the middle of the last whorl; and with numerous * 
fine revolving grooves, interrupted on the coste; on the upper 
whorls there are about five; and on the lower half of the last whorl 
usually five or six distinct and continuous ones. Aperture broad 
oval, anteriorly rounded and slightly effuse; outer lip thin, sharp ; 
columella nearly straight at base within, slightly revolute, out- 
wardly, regularly curved anteriorly where it joins the outer lip, 
and not forming an angle with it. The epidermis is thin, light 
yellow, sometimes with a darker, yellowish revolving band on the 
middle of the last whorls, and also with the revolving striz darker. 
Length 5, diam. 1.7 mill. 
Less slender than J. interrupta with more rounded whorls. 
(Dredged in 8-10 fathoms.) 
‘ Vineyard Sound. 
Doubtful and Undetermined Species. 
4, T. TEXTILIS, Kurtz. 
Cat. Mar. Shells, 8. 1860. 
Whorls six or seven, shouldered, thick-set with prominent, 
smooth, longitudinal ribs, the interspaces crossed by impressed 
revolving lines. White, waxy or chalky. 
Length 3, diam. 1.15 mill. 
Fort Johnson, 8. C. 
5. T. sprrata, Ktirtz and Stimpson. 
(Chemnitzia.) Bost. Proc., iv. 115. 1851. 
Shell .ovate-conical, umbilicate, white, shining; with minute 
transverse striz ; whorls six, flat, angulate in front; suture pro- 
found; aperture small, ovate; columella edentulous. 
Length 2.5, diam. 8 mill. 
North Carolina. 
6. T. cuRTINA, Gould. 
(Chrysallida.) Bost. Proc., viii. 280. 1862. 
Shell minute, ovately turreted, whitish; whorls six to seven, 
convex, cancellate by four series of granules; last whorl about 
’ ; 
