350 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [644] 
pressed revolving grooves, of which 8 or 10 are wider and deeper than 
the rest; similar but finer grooves cross the spaces between the coste, 
but are mostly obsolete on the cost; the middle whorls usually have a 
similar number of costz, which are less prominent, and often more or 
less obsolete, while the spaces between are crossed by numerous fine 
revolving striz. The canal is short, broad, and nearly straight; the 
outer lip well rounded, not incurved anteriorly, but with a decided 
emargination posteriorly. Length of mature shells, 13™"; diameter, 
6°", often smaller. 
Specimens of the same size and form from Vineyard Sound and New 
Haven agree closely with the above description in most respects, but 
have 14 or 15 costz on the last whorl, and about 20 on the preceding 
ones, where the coste are so crowded that the spaces between are often 
narrower than the coste. 
ANACHIS SIMILIS Verrill. Plate X XI, fig. 109. 
Columbella similis Ravenel, Proc. Acad. Nat. Sci., Philad., 1861, p.41. Columbella 
translirata Ravenel, op. cit., p.42. Columbella avara (in. part) Gould, Invert., 
ed. i, p. 313, fig. 197; ed. ii, p. 356, fig. 726. 
Massachusetts Bay to Georgia. Abundant in Vineyard Sound and 
Long Island Sound; Great Egg Harbor. Fort Macon (Dr. Yarrow.) 
This species is usually much more elongated than the preceding, with a 
more elevated spire, the broadest place being a little above the lower 
third of the length. Whorls,10; flattened; the nuclear whorls smooth 
The canal is longer, and usually distinctly excurved ; the outer lip is 
more or less incurved anteriorly, so as to slightly narrow the canal; the 
body-whorl has 18 to 20 or more rather regular, obtuse cost, sepa- 
rated by spaces of about the same width, generally slightly nodular close 
to the suture; at some distance below the middle of the whorl they 
gradually disappear, but sometimes there are also smaller intermediate 
cost below the middle of the whorl (var. translirata); the lower part 
of the whorl is covered with numerous well-impressed, revolving 
grooves, which cross the lower ends of the cost, rendering them nodu- 
lous; on the upper part of the whorls the revolving grooves are larger 
and more distinct than in the preceding species, and usually continue 
over the cost; the one next below the suture is usually larger than 
the rest, and thus produces the subsutural nodules; the grooves are 
generally least distinct in the middle of the lower whorl, which is some- 
times slightly angulated. On the middle whorls there are numerous 
(usually more than 25) regular coste, like those of the last one, and 
crossed by about 5 distinct revolving grooves, more conspicuous in the 
spaces between; the upper one largest, usually producing a distinct series 
of nodules on each whorl. Color exceedingly variable, generally dark 
reddish brown, chestnut, or light yellowish brown, more or less mottled 
and specked with whitish; there is often a subsutural band of white, 
or the nodules are white, and also a band of white around the middle 
