A. E. Verrill — Catalogue of Marine MoUusca. 
537 
shell resembles T. nivea Stimpson, which also occurs in the same 
region, but the latter is a longer and larger shell with a decidedly 
smaller and more prominently upturned nucleus, and is strongly and 
regularly longitudinally ribbed. 
Turbonilla Bushiana Verrill. 
Turbonilla formosa Verrill and Smith, in Verrill, Amer. Jonrn. Sci., xx, pp. 392, 398, 
Nov., 1880 ; Proc. O'. S. Nat. Mus., iii, p. 380, 1880 {non Jeffreys). 
Plate LVIII, figure 16. 
Shell lustrous, white, or pinkish white, often beautifully iridescent, 
elongated, with a regularly tapered, acute spire. Whorls eleven or 
twelve, somewhat flattened, rounded at the sutures, which are im- 
pressed. Numerous, low, broad, rounded, curved ribs cross the 
whorls ; they are most evident just below the sutures, often obsolete 
above them. Aperture ovate, a little effuse anteriorly. Nucleus 
small, upturned, reversed. Length, i2 mm ; breadth, 3’25 mni . 
A few living examples of this elegant shell occurred at stations 
891, 892 and 894, in 365 to 500 fathoms, 1880. 
This species is named in honor of Miss K. J. Bush, an excellent 
assistant in the conchological work of the U. S. Fish Commission. 
Turbonilla costulata Verrill. « 
Turbonilla costulata Verrill, Rep. Invert. Anim. Vineyard Sd., in Rep. U. S. Fish 
Com., i, p. 658, 1874 (auth. cop., p. 364). 
Long I. Sound, off New Haven, to Vineyard Sound ; 1 to 5 fathoms. 
Turbonilla areolata Verrill. 
Turbonilla areolata Verrill, Rep. Invert. Anim. Vineyard Sd., in Rep. U. S. Fish 
Com., i, p. 658, 1874 (auth. cop., p. 364). 
Long I. Sound, off New Haven, to Vineyard Sound, 2 to 8 fathoms. 
Turbonilla stricta Verrill. 
Turbonilla stricta Verrill, Rep. Invert. Anim. Vineyard Sd., in Rep. U. S. Fish Com., 
i, p. 659, 1874 (auth. cop., p. 365). 
Long I. Sound, near New Haven, Conn., 3 to 8 fathoms. 
Turbonilla equalis Verrill. 
Twrritella cequalis Say, Journ. Acad. Nat. Sci. Philad., v, p. 208, 1826. 
Turbonilla e»qualis Verrill, Rep. Invert. Anim. VineyardSd., in Rep. U. S. Fish Com. 
i, p. 659, 1874 (auth. cop., p. 365). 
Vineyard Sound, 0 to 8 fathoms. Southern coast. 
