BARTSCH: NEW ENGLAND PYRAMIDELLIDAE. 87 
The following specimens have been examined: — 
No. of Disposition of 
Cat- no. spec. Locality. material. 
203.765 1 Wood's Holl, Mass. U. S. nat. mus. 
203.766 6 
203.767 1 
1 " " " H. W. Winkley coll. 
203.768 5 " " " U. S. nat. mus. 
13 " " " H. W. Winkley coll. 
203.769 1 Branford, Conn. U. S. nat. mus. 
Turbonilla (Pyrgiscus) interrupta (Totten). 
PI. 12, figs. 18, 23. 
Turritella interrupta Totten, Amer. jour. sci. and arts, vol. 28, p. 352, fig. 
7, 1835. 
Shell slender, elongate-conic, pale wax yellow. Nuclear whorls 
two and one quarter, depressed helicoid, about one fourth immersed 
in the first post-nuclear turn, having their axes almost at right angles 
to that of the succeeding whorls. Post-nuclear turns quite high 
between the sutures, very slightly rounded and weakly shouldered at 
the summit; ornamented by very broad, low, axial ribs which are a 
little wider than the intercostal spaces. There are about 20 of these 
ribs upon the 2d and 3d; 22 upon the 4th, 5th, and 6th; and 24 upon 
the 7th and penultimate turns. In addition to the ribs the whorls are 
marked by from 11 to 14 deeply incised spiral lines, all of which, 
excepting the supraperipheral one, are equal in strength and sub- 
equally spaced. The one immediately above the periphery is much 
hea\'ier and forms a line of deep pits. Peripheral band of the last 
whorl free from any sculpture, excepting the feeble continuations of 
the axial ribs; well rounded. Base rather short, well rounded, marked 
by eight equally strongly incised and equally spaced spiral ' lines. 
Aperture moderately large, subquadrate, somewhat effuse at the 
junction of the outer and basal lip, both of which are thin; columella 
slender, slightly curved and weakly reflexed. 
The specimen described and figured, cat. no. 202,889 U. S. N. M., 
comes from Narragansett Bay. It has nine post-nuclear whorls and 
measures: length, 5.7 mm.; diameter, 1.3 ram. 
