GASTEROPODA. 23 
apertura ovata, longitudinis teste trientes duos adequans, postice 
angulata ; columella obliqua, absque plica. 
Succinea venusta, GouLp; Proceed. Boston Soc. Nat. Hist., ii. 186. 
Nov. 1846. Expedition Shells, 30. 
SHELL of middle size, beautifully proportioned, ovate, thin, transpa- 
rent and shining, of a pale, sometimes greenish amber-colour, marked 
with rather distant, nearly regular, rounded lines of growth. Whorls 
two and a half, gracefully rounded, separated by a deep suture, 
and forming a well-proportioned, prominent, obtusely pointed spire. 
Body beneath large and gibbous, with no perceptible fold on the colu- 
mella. Aperture regularly ovate, angular behind, without enamel on 
the left margin, rather more than two-thirds the length of the shell. 
Length of axis nine-twentieths of an inch; breadth one-fourth of 
an inch. 
Found on Mount Kea, at an elevation of 7000 feet, Hawaii, Sand- 
wich Islands. 
Almost exactly like S. ovals, Gould, but a little more corpulent. 
It is less elongated than S. pudorina, more shining, and differently 
coloured. 
Succinea MopEsTA (Gould). 
Testa mediocris, ovata, tenuis, nitens, diaphana, stramineo-cornea, tenu- 
iter striata, et lineis interruptis volventibus arata, subtus ventricosa : 
spira reflexa, anfractibus tribus, ventricosis: apertura rotundato- 
ovata; columella arcuata, incrassata, sub-perforata ; plica conspicua. 
Succinea modesta, GouLp; Proceed. Boston Soc. Nat. Hist., 11. 186. 
Noy. 1846. Expedition Shells, 29. 
Anima small, fawn-coloured, minutely annulated with dark colour 
about the neck, radiated posteriorly, margin paler; tentacles small, 
with a dark stripe running backwards from them. 
