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perfect specimens I ever found. It dues not agree with the Bulline, 
but I can place it nowhere else, unless with the Hydatine. 
Bullina lauta 1 have always considered heretofore the same as 
B. undata (Brug.) ; but on close examination I find differences 
sufficient to warrant a separation. With a glass can be traced the 
longitudinal lines crossing the transverse ribs. The ribs of B. un- 
data are described as smooth, and the interstices punctured trans- 
versely, which does not agree with my shell. In B. dauta the apex 
is more obtuse, and the transverse red lines are regular, in which 
respect also it differs from B. undata. The localities of the two 
shells are wide apart, and I have never received a single specimen 
from the islands south of the Sandwich, nor ever heard of its having 
been found on them. 
Tomatina sandwicensis seems to approach T, gracilis (Adams). 
It is, however, striated transversely. 
I have another species of Haminea which cannot be distinguished 
from H. crocata ; but, not having had an opportunity of examining 
the animal, I must defer its description. 
Atys debilis approaches A. elongata of Adams, but does not agree 
with his description in several particulars. 
The Bullide are found principally at one locality on the Sandwich 
Islands, where I have collected but one season. 
1. BuLLINA VITREA. 
Shell ovate, thin, fragile, white, with or without one or two sets 
of two or three fine transverse black lines on body whorl, transversely 
finely grooved ; interstices punctured; spire obtuse ; apex acute ; 
whorls four ; aperture oval, dilated at the base; slight fold at the 
base of the columella (not imperforate, umbilicated). 
Mus. Cuming. 
2. BuLLINA LAUTA. 
Shell oval, umbilicate, white, with two transverse red lines on body 
whorl, crossed by irregular longitudinal pink undulating lines, trans- 
versely ribbed, crossed by fine longitudinal raised lines ; whorls 
four ; spire a little elevated, nucleus persistent ; aperture elongately 
oval ; columella obliquely truncated. 
Mus. Cuming. 
3. ToRNATINA SANDWICENSIS. 
Shell small, cylindrical, shining, white, finely striated transversely ; 
spire elevated ; whorls four ; aperture contracted posteriorly, dilated 
anteriorly ; slight fold on columella. 
Mus. Cuming. 
4. HAMINEA CROCATA. 
Shell suboval, thin, fragile, slightly narrowed posteriorly, smooth, 
with the exception of the longitudinal lines of growth; outer lip 
slightly produced posteriorly, and rounded ; aperture narrowed poste- 
