72 The Williams Collection o) Shells 



Many of the extremely rare specimens of Cypraeas, 

 and other fine species represented here, came from the 

 old collections in foreign lands, of Sir David Barclay, 

 General Tripe, Dr. James C. Cox, Lord Ashbrook, Ad- 

 miral Keppel, Mr. S. I. Da Costa, and many others, 

 besides from those of Prof. Henry A. Ward, Mr. John 

 H. Campbell, Mr. J. H. Delaney, Mr. Sloman Rous, 

 Mr. Henry Hemphill, and others in this country, all 

 of whom were collectors of large experience and fine 

 taste. 



Some interesting fossil forms of Cypraea, not in- 

 cluded in the above enumeration, are chiefly from the 

 Campbell collection. 



It is worth while to rehearse some of the great 

 rarities among the Cypraeas here. Cypraea broderipi, 

 the only one in America, Cypraea sulcidentata, the 

 largest specimen known of this very rare species, C. 

 capensis elizabethensis, a type specimen, C. castanea, 

 C. nivosa, C. citrina, C. chrysalis, C. bicallosa, C. 

 montrouzieri, C. walkeri, C. bregeriana, C. oranica, C. 

 coxeni, C. gelassima, C. boivini, C. gemmula, C. nebu- 

 losa, C. similis, C. pyriformis, C. rashleighana, C. good- 

 alli, C. noumeensis, C. crossei, C. cumingi. Then 

 come the remarkable, unmatched color- varieties of C. 

 tessellata, camelopardalis, vitellus and mappa, of C. 

 argus and mauritiana, the curious mutations in form 

 and size of many species, the wonderful color suites 



