PHIL1NE. 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 (I. 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). 



Bullcea 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 navium 

 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 Bullaea. 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 liv- 

 ing examples. (Bens.). 



P. ERYTHR^EA H. Adams. PL 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, pi. 3, f. 11, [shell] 



Ha [gizzard plate]). 



Red Sea (McAndrew). 



This is "P. erythrceensis=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. vaillanti is identical with this or not, but in 



