SEELET— ON CHALK GASTEROPODS. 
91 
of the shell. The body-whorl is slightly inflated, and the ribs upon it are wider apart' 
and relatively less nutnerous than on the whorl above ; they are crossed by numerous' 
close, spiral stria;. The canal is broken, but the body-whorl could not have been less 
than twice as loug as wide, i. e. half the leugth of the shell. 
Although the mouth is not seen, the body-whorl, from which the 
shell is partly removed, shows beyond doubt the lines of growth cha- 
racteristic of the genus. The " notch " in tlie lip appears to extend 
almost, if not quite, to the suture. It is the only species of the 
genus possessing the area-railing-like ornament, externally more like 
a Kostellaria. 
FUSUS TEACHTS (n. Sp.). 
Shell fusiform, rather less than three times as long as wide. Spire elevated, less than 
half the length of the shell, composed of four or five whorls. Each whorl is twice as 
wide as high, and banded by two wide, thick, much elevated ribs, the space between 
which is hollow, and the sjiaces above and below become constricted and hollow on ap- 
proaching the whorls they respectively adjoin. The body-whorl, like those preceding it, 
attains its greatest width at the band of the second rib. Anterior to this are three other 
ribs, the more anterior two of which are closer together than the others; and anterior 
to these are several very much smaller and closer together. 
The whole shell is marked by close, fine, spiral striaB, which, on the 
smaller whorls, are often crossed by others in the direction of the 
axis. The mouth is extremely elongated and very narrow, lips being 
nearly parallel. 
Chemnitzia Woodwardi (n. sp.). 
Shell subcylindrical, two and a half times as high as wide, consisting of about seven 
whorls, which regularly increase in size and are moderately convex. Each whorl is one 
and three-quarter times as wide as high. The space where the whorls adjoin is concave, 
and the suture is indistinctly seen. There is no ornament, but a great number of fine, 
close, spiral striaj. 
This and some other shells have quite an Oolitic aspect. 
Solarium oenatissimum (n. sp.). 
Depressed, few-whorled, nearly twice as wide as high ; composed of about four or five 
whorls, which somewhat rapidly increase in size, and are five times as wide as high. Mar- 
ginally the whorl is angular, and on the spiral surface there bordered by a narrow concave 
groove, which is margined on the inner side by an elevated rib. Above and interiorly 
there is another hollow space less deep and twice as wide, and near to the suture a row of 
about fifteen large, expanded, tumid, nearly adjacent tubercles. The base is gently con- 
vex and ornamented by close, spiral striae. The whole of the upper surface is spirally 
striated, but the stria are very much finer than those of the base ; they are cancellated 
by efjually fine, oblique striae, which are directed backwards from the suture. The mar- 
ginal groove of the whorl gives to the spire a marked sutural channel. 
This looks very like a Pleurotomaria, but I think it is a Solarium. 
Pteroceras, representative of Fittoni. 
Shell elongated, about half as wide as high.* Spire less than a third the length of 
the shell, composed of about four whorls. Each whorl is more than a thu-d as high as 
wide, and has round its middle a sharp, prominent angle ; the part of the whorl above this 
is incUued at an angle of 45°, that anterior to it is perpendicnlar. The inclined part is 
» The specimen, which is broken, is two-thirds as wide as high. 
