348 



Mr. F. P. Pascoe on neio Curculionidce. 



indicated by the very small opercullgerous disk on the upper 

 surface of the hind part of the foot. 



Dall * has shown that with regard to V. ampullaceaj an 

 allied form from the Ochotsk Sea, &c., the operculum is 

 indifferently present or wanting. It may therefore be the 

 same with the present form. 



The shell of this species differs from that of V. ampullacea 

 in several points. It is usually thinner, has a deeper siphonal 

 notch, a more acuminate spire, a non-canaliculate suture, and a 

 more velvety epidermis ; and adult specimens are usually 

 larger than any examples of F. am'pidlacea that I have ever 

 seen. The largest specimen in the Museum is 53 millim. 

 long, whilst the finest example of the Ochotsk species has 

 only a length of 46. The record of this species at Loo-Choo 

 is interesting, as showing how far south species essentially of 

 boreal type may be expected to extend. 



XLIX. — Descriptions of some new Genera and Species of Cur- 

 culionidce, mostly Asiatic. — Part IV. By FeANCIS P. 

 PascoEj F.L.S. &c. 



American Journ. Conch, vol. vii. p. 106. 



