Melanopsis. 
MOLLUSCA. 
95 
3. Melanopsis Deptfordensis.—T he Deptford Mela¬ 
nopsis, pi. XLV. fig. 22, 23. 
Melanopsis fusiformis. Sovverby, IV. p. 3G, pi. 332, fig. 5. 
Shell smooth, oblong-ovate, fusiform, acuminated both above 
and below; body considerably ventricose in the middle; spire 
short, with three flat-sided volutions, and acutely pointed; aper¬ 
ture elongated, sharp and contracted above, and also narrowed 
below ; outer lip slightly undulated ; inner lip broadly reflected 
on the columella above, and gradually becoming narrower as it 
descends. 
This differs from the preceding, in being much shorter in proportion 
to its breadth, in being more ventricose, and tapering more abruptly to 
both extremities. 
Found in the Marine formation, Isle of Wight. 
4. Melanopsis fusiformis.—T he Spindle-shaped Mela¬ 
nopsis, pi. XLV. fig. 20, 21. 
Melanopsis fusiformis . Sowcrby, IV. p. 35, pi. 332, fig. 2, 
3, 6, and 7- Fleming, p. 359. 
Smooth, subcylindrical, fusiform, acuminated at both extre¬ 
mities; spire with four flat-sided volutions, defined by a very 
narrow sutural line, and ending in an obtuse apex; aperture 
oblong, half the length of the shell, contracted both above and 
below; inner lip very glossy, broadly spread over the columella 
above, becoming narrower as it descends, and ending in a mere 
point at the base. 
Found at Hordwell and New Charlton, in the Upper Marine 
formation. 
5. Melanopsis subulatus—T he Awl-shaped Melanopsis, 
pi. XLV. fig. 16, 17. 
Melanopsis subulatus . Sovverby, IV. p. 36, pi. 332, fig. 8. 
Fleming, p. 359. 
Smooth, subulate, and conical; spire rather elongated, with 
six or seven nearly flat-sided volutions; aperture ovate, short, 
being only one-third the length of the shell. 
Found in the Upper Marine formation, Isle of Wight. 
6. Melanopsis Sedgvickii—S edgwick's Melanopsis, pi. 
XLV. fig. 6. 
Melanopsis fusiformis . Sovverby, IV. pi. 332, fig. 1. 
Smooth, oblong, fusiform, tapering to both extremities; body 
very large; spire very short, consisting of three flat-sided volu¬ 
tions ; aperture oblong, occupying nearly half the length of the 
shell; outer lip slightly inflected; pillar lip a little spread over 
the columella. 
This shell differs from M. Deptfordensis , in being less fusiform, and 
in the upper portion of the body being more inflated. 
Found in the Upper Marine formation, Isle of Wight. 
7. Melanopsis? tricarinata —The Three-keeled Mela¬ 
nopsis, pi. XXXIII.* fig. 26. 
Melanopsis tricarinata . Sovverby, Geo. Trans. IV. 2nd 
series, p. 346, pi. 22, fig. 4. Melania tricarinata , Ann. Phil. 
VIII. N. scries, p. 376. 
r l urreted, subulate, conical; spire consisting of six carinated, 
deeply divided volutions; three carinao occupy the exposed 
portion of the volutions, the central one considerably more 
elevated than the others; these are crossed by strong, distinct 
lines of growth ; aperture suborbicular, slightly contracted both 
above and below. 
Found in the Blue Clay of Punfield, Dorsetshire, and in the 
Hastings Sand at Pounceford, near Burford, Sussex. 
8. Melanopsis? attenuata —The Attenuated Melanop¬ 
sis, pi. XXXIII * fig. 27. 
Melanopsis attenuata . Sovverby, Geo. Trans. IV. 2nd series, 
p. 346, pi. 22, fig. 5. 
Subulate, attenuated; with seven or eight somewhat inflated, 
deeply divided volutions, with several carinao on each, the upper 
one the strongest; crossed by undulating, irregular striae, or 
lines of growth; aperture subovate, short, and not occupying 
more than a fourth of the length of the shell. 
Found in the Blue Clay of Punfield, Dorsetshire, and in the 
Hastings Sand at Hollington and Pounceford, Sussex. 
Genus L—MELANIA— Lamarck. 
Shell turreted, or subturreted ; spire for the most part 
elongated, with the volutions divided by a deep suture, 
and generally terminating in an acute apex; aperture 
entire, oval or oblong, in most species acuminated at the 
superior extremity, and rounded below; with an indis¬ 
tinct canal at the base of the columella; outer lip simple, 
and somewhat sharp; columella smooth, incurved; out¬ 
side covered with a strong, horny, olivacious, brown, or 
black epidermis; operculum horny, oblong, spiral, with 
two or three volutions. 
1. Melania scalarioidea. —The Scalariform Melania, pi. 
XLV. fig. 46. 
Melania scalarioidea . Phillips, II. p. 229, pi. 16, fig. 3. 
Somewhat scalariform, elongated; volutions broad, rather 
convex on the sides, with longitudinal, equal, thread-like stria). 
Found in the Mountain Limestone, Bolland. 
2. Melania sulculosa —The Sulcated Melania, pi. XLV. 
fig. 26. 
Melania sulculosa . Phillips, II. p. 228, pi. 16, fig. 1 a . 
Elongated; with convex, deeply divided volutions, which are 
thickly invested with longitudinal, arcuated sulci, which deepen 
towards the lower portion of the volutions. 
Mountain Limestone, Kildare and Bolland. 
3. Melania truncata -The Truncated Melania, pi. 
XLV. fig. 27, 28. 
Melania truncata . Sowerby, III. p. 72, pi. 241, fig. 4. 
Fleming, p. 317- 
Smooth, polished, elongated, conical; body short; spire long, 
consisting of eight or nine flat-sided volutions, which are some¬ 
what angular below; aperture ovate, contracted above, and 
truncated below; outer lip somewhat thickened. Not a line in 
length. 
London Clay, Brakenhurst. 
4. Melania minima. —The Least Melania, pi. XLV. fig. 
29, 30. 
Melania minima. Sowerby, III. p. 72, pi. 241, fig. 3. Fle¬ 
ming, p. 317- 
Smooth, subulate; body short; spire long, with eight or nine 
flat-sided volutions, the apicial one acute; aperture ovate, con¬ 
tracted above, and rounded below. Length equal to four times 
its diameter; very minute, not a line in length. 
London Clay, Brakenhurst. 
