22 MOLLUSCA. 
Apertura teste trientes duos adequans, elongato-ovata, angusta ; colu- 
mella obliqua, sub-recta, vix plicata. 
Succinea pudorina, Gouin ; Proceed. Boston Soc. Nat. Hist., i. 186. 
Noy. 1846. Expedition Shells, 30. 
ANIMAL small, of a dark, ochreous colour, tinted roseate, and mottled 
in a somewhat radiate manner by dusky pencillings; a dusky line 
along the back of the tentacles; surface very finely reticulated. 
SHELL rather large, thin and fragile, elongated, slender ovate, of a 
pale amber-colour, more or less tinted with roseate, especially at tip ; 
surface roughened by coarse lines of increment. Whorls three, very 
oblique, and forming an acute, elongated, partially reflexed spire; 
they are remarkably rounded, and separated by a profound suture. 
Aperture two-thirds the length of the shell, narrow and regularly 
ovate, lip slightly retirimg posteriorly, and consequently convex in 
profile; columellar fold very slight. 
Length of axis eleven-twentieths of an inch; lateral breadth four- 
tenths, vertical breadth one-fifth of an inch. 
Inhabits the mountains of Tahiti and Eimeo, at an elevation of from 
200 to 4000 feet. 
This species is closely allied to the elongated variety of S. amphibia, 
or to the American species which passes under the name of S. ovata. 
It has a more slender figure, and more elongated spire than S. hame- 
rosa, and the penultimate whorl, when viewed on the side of the aper- 
ture, is nearly twice as long; the aperture itself is also much narrower 
and more contracted. 
Figure 27, the aperture, and 27 a, the profile view of the shell; 27 
, the animal bearing the shell. 
SuccinEa veNusTA (Gould). 
Testa mediocris, ovata, tenuis, pellucida, nitida, ordinatim striata, epi- 
dermide succined interdum virescente induta, subtus gibbosa: spira 
conspicua, obtusiuscula, anfractibus duobus cum dimidio rotundatis : 
