456 
.4. K. Merrill— Catalogue of Marine Mollusca. 
many of the localities off Newport, R. I., and south of Martha’s Vine- 
yard, in 1880 and 1881 (stations 869, 871, 874, 877, 880), in 65 to 
252 fathoms. It was taken in larger numbers at stations 891 to 895, 
in 238 to 500 fathoms. In 1881, it was taken inconsiderable numbers 
at stations 947, 994, 997, 998 and 1028, in 302 to 410 fathoms; and 
sparingly at stations 999 and 1025, in 216 and 266 fathoms; and at 
1029, in 458 fathoms, (’apt. Tanner also took five specimens, Oct. 
10, off Delaware Bay, at station 1049, in 435 fathoms. 
Pleurotomella Pandionis Verriii. 
Pleurotoma ( Pleurotomella ) Poadionis Verrill, Proc. U. S. Nat. M us., iii, p. 368, 
1880. 
Plate LVII, figures 4, 4a. 
Shell large, elongated, thick, with an acute, elevated spire; whorls 
nine or ten, very oblique, moderately convex, not shouldered, with a 
broad, flattened, or slightly concave subsutural band ; whole surface 
covered with close lines of growth, which recede in a broad curve on 
the subsutural band; numerous, rather tine, unequal, raised, spiral 
lines, separated by well-defined grooves, of about the same breadth, 
and decussated by the lines of growth, cover the whole surface, ex- 
cept the subsutural band. The upper whorls are also crossed by six- 
teen to eighteen blunt, transverse, oblique ribs, about as broad as 
their interspaces, most elevated on the middle of the whorls, fading- 
out above and below, and not crossing the subsutural band, which is 
marked only by the lines of growth ; on the body-whorl the ribs be- 
come nearly or quite obsolete. Aperture elongated, oblong-ovate ; 
outer lip, in the adult, broadly rounded and somewhat flaring, not 
incurved at the canal; sinus, broad and shallow, but well-marked, 
just below the suture; canal short, nearly straight, broad and open 
in the mature shell ; but in the immature shells the aperture is nar- 
rower, and the outer lip curves inward at the base of the canal, 
making it narrower. Columella having a slight sigmoid curve, its 
inner edge receding to the left, at the canal. Color of the most per- 
fect specimen, waxy white, tinged with pale orange-brown, with a 
faint, white band on the middle of the body-whorl, and anothor be- 
low the suture: the other specimens are stained dark gray or brown. 
Operculum absent. 
Length, 43 mm ; breadth, 14-5 mm ; length of aperture, 19 mm ; its 
breadth, 5 , 5 n,nj . The largest example is 48 mm long; breadth, 17 ,niu ; 
length of aperture, 21"“"; its breadth, 7 mm . 
