56 The Williams Collection of Shells 



virgatus, Reeve. West Colombia 



virgo, Linn. Mauritius 



viridulus, Lam. Mauritius 



vittatus, Lam. Panama 



vitulinus, Hwass. Ceylon 



voluminalis, Hinds var. auris, Pils. Japan 



vulpinus, Hwass. Indian Ocean 



ximines, Gray (interruptus. Brod., var.) Lower California 



zebra. Hwass. Andaman Is. 

 zonatus, Hwass. Moluccas 



The Pleurotomidae include a multifarious host, 

 among them a fine specimen of the remarkable Halia 

 priamus and several unusually large and handsome 

 examples of Surcula carpenteriana. There are sixty 

 species of Terebridae, all of fine quality, and twenty- 

 seven of Caxcellariidae, one of which, Cancellaria 

 cooperi, sold for $75. C. semidisjuncia is also worthy 

 of mention. 



The Strombidae display almost every known 

 species, even Strombus thersites and Rostellaria powisii, 

 — aristocrats of ancient lineage. One of their ancestry 

 is shown by Rostellaria columbaria from the Calcaire 

 grossier (Eocene Tertiary) of France. This is a won- 

 derfully attractive series of shells, especially the 

 Strombs and the species of Pterocera. 



In this collection no family has been discriminated 

 against, because of insignificance or of costliness, nor 



