MOLLUSCOUS ANIMALS. 
131 
Oliva zonalis. t . 36. /. 25.— Lam. Hist. 439. n. 61. 
Shell ovate, fusiform, polished, pellucid white ; spire conical, acute ; last whorl with two black and one 
central fulvous spiral band. Mouth linear, ovate, rather less than twice as long as the spiral column ; lip 
thickened, with a single oblique fold in front, and a black spot behind near the suture ; the anterior belt 
narrow. Axis 2 ; diam. £ ; mouth If lines. 
Oliva undatella. t. 36./. 23, 27. — Lam. Hist. vi. 438. 
Shell ovate, oblong, brown, with black undulated bands ; spire conical, convex, apex produced, acute, 
with a narrow articulated brown and yellow band round the suture ; anterior belt broad, occupying more than 
one-third of the last whorl ; behind yellow, with brown concentric lines, with two oblique spiral grooves in 
front, just over the canal. Mouth linear, inner lip thickened to the suture behind, with transverse grooves 
before, with four or five very oblique grooves. Axis 7 ; diam. 3 ; mouth 6 lines. 
Var. 2. undata. t . 36./. 26. 
Shell pale pinkish ; body of the last whorl with wavy concentric bands placed in three series ; front of 
columellar lip brownish, sometimes a few brown waves on the anterior belt. 
Var. 3. nitida. 
Shell white, with irregular black spots and lines, some of which are seen on the inside of the shell. 
Oliva auricularia. Lam. — Guerin. Icon. — Mott. t. 16. /. 13. 
Oliva patula. Sow. T. C. 2331. 
Inhab. Pacific Ocean. 
Oliva lineolata. 
Voluta lineolata. Gray. Wood. Sup. t. 5. /. 3/. 
Inhab. Coast of Peru? 
Oliva nana. Lam. 438. n . 60. 
There are three very distinct varieties of this species ; the first figured by Lister, t. 733. f. 22. is obconic ; 
spire white; body whorls yellow, with zigzag brown lines in front; yellow and rounded behind. The second 
variety is ovate, slender, coloured like the last. And the third is of the same shape as the former, but the 
shell is minutely brown speckled with a series of black spots near the suture, and the front of the pillar is 
brown. So distinct as these varieties appear, it is not difficult to find specimens intermediate between each 
of them. 
Oliva volutella. Lain. 43. — Wood. Sup. t. 4./. 36. 
There were brought home by the expedition some specimens of this shell, of a dark purple black colour, 
with the back edge of the anterior belt pale. 
AGARONXA. 
The genus appears to be intermediate between the Olives and the Ancillarice, for it has the twisted 
columella and the wide mouth of the latter, and the grooved suture of the Olive ; but the animals offer the 
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