18 NEW-YORK FAUNA — MOLLUSCA. 
Diaphana pellucida of Brown (Conchology of Great Britain, pl. 38, fig. 10, 11). It bears 
a resemblance in its contour to the B. fontinalis of Say, which we are inclined to suspect to 
be a Physa. 
Buia HIEMALIS. 
PLATE XXXV. FIG, 335. 
Bulla hyemalis. CouTuovy, Bost. Jour. Nat. Hist. Vol. 2, p. 180, pl. 4, fig. 5. 
B, id. Gov.p, Invertebrata of Mass. p. 163, fig. 100. 
Description. Shell globular, minute, very thin and brittle. The body-whorl enveloping all 
the others so as to leave no perceptible spire, and marked with the lines of growth. Aperture 
narrow above, dilated beneath. Outer lip strong, and regularly curved : it revolves from its 
junction behind, nearly a third of a revolution, before it turns forward. Columella slightly 
arcuated, and reflected upon the body of the shell, so as to form a small but distinct umbili- 
cus. 
Color. Hyaline, with a brownish tinge, except near the tip, where it is whitish. 
Length, 0°15; diameter, 0°1. 
Stomachs of codfishes on the coast of Massachusetts. 
Buia oryza. 
PLATE XXXV. FIG. 327. 
Bulla oryza. Totten, Am, Jour. Sc. and Arts, Vol. 28, p. 350, fig. 5. 
B. id. Govuxp, Invertebrata of Massachasetts, p. 168, fig. 93. 
Description. Shell minute, not very thin, regularly diminishing from the middle towards 
each end; the tip being depressed into a shallow pit, and the base rather acute. Surface 
marked with numerous minute lines of growth, and with a number of impressed revolving 
lines on the lower portion, and a few more obscure ones near the shoulder: none of them 
perceptible without a magnifier. Aperture as long as the shell, narrow above, and widening 
gradually downwards. Outer lip sharp, simple, regularly arched, rising above a little higher 
than the shoulder. Left margin thickened below into a stout, smooth and glossy pillar, which 
is twisted so as to form an oblique fold: it terminates abruptly beneath, truncated. No um- 
bilicus either at the tip or the base. 
Length, 0°3; diameter, 0°1. 
Found originally by Col. Totten in muddy bottoms at Newport, and since in New-Bedford 
harbor. It has not yet been noticed north of Cape Cod, but will probably be discovered on 
our coast. 
