BARTSCH: NEW ENGLAND PYRAMIDELLIDAE. 79 
with a small distinctly reversed apical whorl; the remaining nine 
whorls are somewhat flattened, are all crossed by obtuse, transverse 
costae, which are a little oblique, especially at the upper ends, close to 
the sutures; on the body- whorl they vanish, leaving it smooth; the 
interstices between the costae are deep and apparently smooth. The 
aperture is round ovate, well rounded or sub-circular anteriorly; the 
inner Up having a raised and thin margin. I>ength 4.5 mm., breadth 
1.25 mm. Vineyard Sound, 6 to 8 fathoms." 
Strioturbonilla Sacco. 
Striotiirbonilla Sacco, Moll, del Piemonte e della Liguria, p. 94, 1892. 
Shell as in Turbonilla and Chemnitzia but finely and closely spirally 
striated on spire and base. 
Tyjie, Strioturbonilla alpina Sacco. 
Turbonilla (Strioturbonilla) bushiana Verrill. 
PI. 11, figs. 8, 12. 
Turbonilla bushiana Verrill, Trans. Conn. acad. arts and sci., vol. 5, p. 537, 
pi. 58, fig. 16, 1882,= Turbonilla formosa Verrill and Smith, Amer. journ. sci., 
ser. 3, vol. 20, p. 398, 1880 (not Chemnitzia formosa Klipst, Denkschr. kais. 
akad. wiss. Wien, vol. 12, p. 28, 1856, = Pse^uioynelania ?). 
Shell very large, regularly elongate-conic, milk white, shining. 
Nuclear whorls two, very small, depressed helicoid, about one third 
immersed in the first post-nuclear turn. The axis of the nuclear spire 
is at right angles to the axis of the succeeding whorl. Post-nuclear 
whorls moderately rounded, marked by axial ribs which are poorly de- 
veloped, irregular in size and spacing. They are very feeble on the early 
whorls. There are about 20 upon the first to fifth whorl, 22 upon the 
sixth (this count was taken from the specimen which has served for the 
description and figure of the nucleus, cat. no. 45,470 U. S.' N. M.). 
The following is from cat. no. 45,471 U. S. N. M., the adult specimen 
figured. This has lost the nucleus and probably the first two post- 
nuclear turns. The outer surface of the early whorls of the adult shell 
is decorticated; the 5th, 6th, and 7th of the remaining ones have 22 
axial ribs. On the 8th there are 23, some of which show a strong 
tendency to bifurcation, '^lie 9th has 24, while on the last half of the 
