PHILINE. 9 
all events the matter merits further investigation before the conser- 
vative malacologist can be satisfied to declare the Austral and North 
Atlantic forms identical; and in this connection the alleged occur- 
rence of P. aperta or schroeteri in the Philippines needs confir- 
mation. Watson (/. c.) retains angasi and aperta distinct. 
P. cAuRINA Benson. Unfigured. 
Shell ovate-oblong, white, very thin, papery, transversely elegan- 
tly and most minutely striatulate; aperture auriform, narrowed 
above, patulous below; lip rising above the vertex; spire none. 
(Bens.). 
Tinghae, Chusan (Dr. Cantor). 
Bullea caurina Bens., Journ. Asiat. Soc. Beng. xxiv, 1855, 
p. 128. 
The part of the body-whorl which is visible when the aperture is 
turned towards the observer, is small in proportion to the mouth. 
The summit of the shell resembles the same part in Bulla naviwm 
and B. solida, but the outer lip is destitute of the fold where it rises 
above the apex, which appears in those species; resembling in this 
respect B. ampulla. ‘The thinness of the inner lip locates this shell 
in Bullea. Its being internal, probably accounts for the state of 
Dr. Cantor’s specimens from the contraction of the cooked animals, 
compressing the very fragile shells. The same circumstance may: 
have occasioned the want of success met with in the search for liy- 
ing examples. (Bens.). 
P. eRyTHR#@A H. Adams. PI. 3, fig. 60. 
Shell subquadrate-oval, thin, semipellucid, sculptured with dis- 
tant transverse lines; aperture ample, dilated in front, the columel- 
lar margin thin; lip rounded behind, margin arcuate. Alt. 8, 
diam. 6 mill. The gizzard of this species has the plates deeply ser- 
rated on the edges (H. Ad., P. Z. S., 1872, p. 11, pl. 3, f. 11, [shell] 
lla [gizzard plate]). 
Red Sea (McAndrew). 
This is “P. erythreensis=aperta” of Cooke (Ann. Mag. N. H. [5], 
xvii, p. 133). It has been stated to be indistinguishable from P. 
aperta, but there seems to be a strong differential feature in the ser- 
rated gizzard plates, those of aperta being smooth at the edges. I 
do not know whether P. vail/anti is identical with this or not, but in 
