PLATE XLIII. 
1. Vermetus Bognoriensis. (Bognor Vermetus.) Spire smooth, circular, conical, concave beneath; tube pentangular, with 
sulcus above aud below; tubular projection cylindrical, curved. 
2. V. Polygonalis. ( Polygonal Vermetus.) Spire in form of short cone, with one involute, erect ridge, winding to apex, and 
two round margins, ending in short spines; tubular projection, with trumpet-shaped termination, with seven acute angles. 
3. V. Concinnus. (Trim Vermetus.) Circularly convolute; convex one side, concave the other; great portion of tube projecting; 
tube pentangular. 
4. 5. V. Tumidus. (Tumid Vermetus.) Thick, discoidal; with few volutions; with broad, concentric sulcus ; prolonged portion 
small, short, cylindrical; margin of aperture thickened ; apex w'ith a callus. 
6-8. Tornatella Acutus. (Acute Tornatella.) Subcylindrical, smooth ; spire short, conical, acute ; columella, w ith one plait; 
aperture three-fourths length of shell. Fig. 7, natural size; figs. 6, 8, magnified. 
9,10. T. Nose. (Noah’s Tornatella.) Oval, fragile, subcylindrical; with one large plait at base of columella; aperture oblong- 
ovate; outer lip sulcated within; with many transverse strife, decussated by longitudinal ones. 
11,12. T. CuspidatUS. (Pointed Tornatella.) Smooth, subcylindrical; spire conical, with four volutions* apex sharp ; aperture 
elongated; columella with single plait and acute spiral edge; outer lip crenated. 
13. T. RetUSUS. (Blunted Tornatella.) Subovate, smooth; body large, ventricose; spire small, with tliiec volutions; apex 
obtuse; aperture subovate; columella w’ith two plaits; outer lip plain, acute. 
14,15. V. Striatus. (Striated Vermetus.) Strong; spire lenticular; >vith radiating striae, sharp and acute near umbilicus • 
under side umbilicated; aperture orbicular. 
16, 17. Sigaretus Canaliculatus. (Canalled Sigaretus.) Ovate, convex; spire depressed, with two canaliculate volutions ; apex 
acute; aperture subovate; inner lip reflected on columella; umbilicus behind, with longitudinal striae, decussated by transverse 
strife. Length, h to j in. 
18,19. Natica Sigaretina. (Sigarcius-formed Natica.) Smooth, depressed ; spire small, with three volutions, hardly rising 
above body ; aperture ovate; outer lip even; thickening in pillar narrow ; umbilicus large, with lenticular callus. 
20,21. N. Cirriformis. (Cirrus-shaped Natica.) Subglobose; spire short, with three depressed volutions; body flattened; 
aperture small, sublimate ; pillar lip thickened, with central sinus; umbilicus large, exposing volutions within. 
22,23. N. Patula. (Open Natica.) Ovate; bod}' large, flattened; spire short, depressed, with four minute volutions; apex 
acute; aperture sublunate; pillar lip thickened; umbilicus large, partly filled by a callus; surface smooth, with minute concentric 
strim. 
24. N. Discrepans. ( Differing Natica.) Ovate, smooth, glossy; spire very short, with four depressed volutions; aperture large, 
sublunate; outer lip expanded,plain at edge ; pillar lip thickened on columella; umbilicus deep, wide. 
25. N. Cincta. (Girdled Natica.) Ovate; spire depressed, with three volutions; body with subcarinated edge; aperture sub¬ 
lunate, with outer lip sharp; umbilicus small; outer surface smooth, with distinct strife; body with spiral fillet. 
26,27. N. Ampliata. (Ample Natica.) Hemispherical; body large, inflated; spire small, with two depressed volutions; aper¬ 
ture ample, outer lip expanded; columella lip plain; with small, filiform, longitudinal strife. 
28,29. N. Similis. (Similar Natica.) Smooth, rhomboidal, ovate; spire -with three or four depressed volutions; aperture 
sublunate, longitudinal; outer lip plain ; inner lip thickened, bilobate, dividing deep umbilicus. 
30,31. N. Glaucinoides. (Greyish Natica.) Semiglobular; body large, inflated; spire small, with four rounded volutions- 
apex acute ; umbilicus, large, simple ; surface glossy, light grey-brown, with darker bands. 
32. N. Plicistria. (Plicisfnate Natica.) Oblong-ovate; bod} 7 large, smooth; spire small, subconic, with three plicistriate volu¬ 
tions, superior edges being flattened. 
33. 41. N. Adducta. (Close Natica.) Smooth, hemispherical; body large; spire large, with four inflated volutions; apex 
sharp. 
34. N. Elliptica. (Elliptical Natica.) Elliptical; body large, with fine oblique striae; spire short, small, with three depressed 
volutions ; columella plain, arcuated. 
35. N. Planispira. (Flat-wired Natica.) Oblong-ovate; body large ; spire small, with two flattened volutions; aperture wide, 
subquadrate; outer lip expanded ; columellarlip thickened; umbilicus closed. 
36,37. N. Hemiclausa. (Half-closed Natica.) Smooth, subovate ; body large; spire with two small volutions; aperture ovate; 
outer lip smooth-edged; pillar lip thickened, reflected into umbilicus, which it half closes; base produced. 
38,39. N. Lyrata. (Lyre-shaped Natica.) Suborbicular; body large; spire minute, mammillary, with two or three volutions ; 
apex rounded; aperture smooth internally; outer lip expanded; with longitudinal, lamellar, filiform striae, resembling strings of 
lyre. 
40. N. Tabulata. (Tabulated Natica.) Oblong-ovate; spire produced, with three flattened volutions; body subcylindrical, 
with subacute base, with five longitudinal striae. 
42,43. N. Tumidula. (Slightly Tumid Natica.) Smooth, orbicular; body large, tumid; spire minute, with two volutions, 
hardly rising above body; aperture large; outer lip sharp at edge; pillar lip reflected on columella, with largo callus closiug 
umbilicus. 
44. N. Elongata. (Elongated Natica.) Oblong-ovate; body large, oblique; spire small, with two or three mammillated volu¬ 
tions ; with oblique, minute stria?. 
45, 46. N. Variata. (Variable Natica.) Subovate; spire small, with two volutions ; apex acute; with oblique and spiral stria?; 
aperture suboval; outer lip expanding; pillar lip reflected, on columella ; umbilicus closed. 
47,48. N. Striata. (Striated Natica.) Smooth, oblong-ovate; spire small, with three narrow volutions; outer lij) blunted at 
edge; inner lip reflected on columella, with sinus at umbilical region ; umbilicus open ; base concentrically striate. 
49, 50. N. Depressa. (Depressed Natica.) Ovate; spire with five rounded volutions ; aperture slightly ovate; inner lip reflected 
on columella ; umbilicus small, oblong, shallow'. 
( 50 ) 
