off Southern New England. 395 
narrowed at the canal. Aperture subovate, sinuous, rather 
large. Shell white, except the columella, which is stained with 
orange-brown. Length, 31; breadth, 14; length of aperture, 
16; breadth, 6™. Stations 865-880 ; 891, 892; 894; 895. 
The animal has neither operculum nor eyes, and does not 
properly belong to Pleurotoma er: _ is, pe — most 
nearly related to Pleurotomella V. The ni differ from all 
those figured by G. O. Sars, ate inci those of Thesbia. 
The basal appendage is large and oblique 
Pleurotoma Carpenteri Verrill and Smith, sp. nov. 
Shell rather small, solid, slender; surface glossy. Whorls 
smooth ; the interstices between the ribs are deeply concave, 
wider than the ribs, > perfectly smooth, except the faint 
lines of growth. Outer lip with a broad shallow notch, below 
the'suture. Aperture rather small, ovate; canal short, narrow, 
straight; columella nearly straight. Col or, pale brownish. 
Length, 7; breadth, 2°75™. Stations 870-873. 
Scalaria Pourtalesii Verrill and Smith, sp. nov. 
Shell pure white, rather a with seven well-rounded 
with fine revolving lines, not visible without a lens. Aponte 
round, with a broad, somewhat reflexed lip; umbilicus small, 
concealed behind the inner lip; no basal keel. Length, 175; 
breadth, 10; of aperture, 4™™. Stations 878, 874. 
Sealaria Dalliana Verrill and Smith, sp. nov. 
Shell smaller and much slenderer than the last, thin, delicate, 
bluish white. Whorls eleven, evenly rounded, with deeply 
indented sutures. Ribs about twenty, on the lower whorls, 
moderately high, thin, oblique, often with a small sharp den- 
ticle, just below the suture; they often alternate; interstices 
wider than the ribs, smooth, without distinct revolving lines. 
Aperture round with a reflexed lip, nearly even all around; 
umbilicus none, Paneth; 10:5; breadth, 35™. Stations 869, 
870, 871, 878, etc., not uncommon 
Lamellaria pellucida Verrill, sp. nov. 
Animal yellowish brown mottled with darker, broad ellipti- 
cal, swollen, without tubercles on the back. Shell ovate, with 
