BARTSCH: NEW ENGLAND PYRAMIDELLIDAE. 93 
spaced lines of pits which pass up on the sides of the ribs but do not 
cross them. Sutures strongly constricted. Periphery of the last 
whorl obscurely angulated. Base well rounded, somewhat inflated, 
marked by about 15 weakly incised spiral lines, which are rendered 
wavy by the ribs. Aperture rather large, oval, posterior angle acute; 
outer lip thin, showing the external sculpture within; columella very 
slender, strongly curved and reflexed, the reflexed portion forming 
a suggestion of an umbilicus. 
The type, cat. no. 203,792 U. S. N. M., comes from Wood's Holl, 
Mass. It has six post-nuclear wdiorls and measures: length, 3.3 mm.; 
diameter, 1.2 mm. 
Turbonilla (Pyrgiscus) whiteavesi new species. 
PI. 12, figs. 32, 38. 
Shell elongate-conic, rather stout, light horn yellow. Nuclear 
whorls small, two and one half, depressed helicoid, not at all im- 
mersed, having their axis at right angles to that of the succeeding 
turns. Post-nuclear w'horls evenly well rounded, marked by rather 
closely spaced, obsolete, retractive axial ribs which are scarcely at all 
defined on the early and last whorls, being indicated practically on 
the median turns only. The spiral sculpture between the sutures 
consists of six, more or less continuous, equally strong incised lines, 
of which the 1st and 2d, 3d and 4th, 4th and 5th, enclose spaces of 
about equal width, while those between the 2d and 3d and 5th and 6th 
are of equal width but a little broader than the outer group. Periphery 
and base of the last whorl well rounded, the latter marked by the obso- 
lete axial ribs only. Aperture moderately large, oval, posterior angle 
acute; outer lip thin, showing the external sculpture within; colu- 
mella slender, curved, and somewhat reflexed; parietal wall covered 
by a thin callus. 
There are two lots of this species in the collection of the U. S. national 
museum: one, cat. no. 83,409, two specimens collected at Shediac 
Bay, New Brunswick, by Dr. J. F. Whiteaves, for whom the species is 
named; and three, cat. no. 203,793 collected by Rev. H. W. Winkley 
at Prince Edward Island. Our description of the nucleus is based 
upon a young specimen of 203,793, and an adult shell minus the 
nucleus from 83,409. The last has ten post-nuclear whorls and 
measures: length, 7.0 mm.; diameter, 2.0 mm. 
