NATICA. 25 



covered by a broad callosity ; whitish, with two broad chocolate 



bands and a row of spots between them. 



Australia. 

 N. DiLLWYNi, Payr. PI. 6, figs. 5,8; PI. 5, fig. IS. 



Yellowish or fawn-white, with white bands bearing obscxxre 



arrow-head markings of light chestnut ; umbilical region whitish, 



parti}" filled by a callus. 



3Iediter7'anean Sea. 



The original figure (fig. 8) represents an obscurely colored 



state of this species. N. avellana, Phil. (fig. 78) is a nut-brown 



varietj^ the bands obsolete. The late Dr. J. Gwyn Jeffrey's 



considered N. jiroxima^ C. B. Ad., a sjmonym. 



N. AREOLATA, Recluz. PI. 6, fig. 23. 



Shell rather thin, polished ; yellowish brown, with lighter 

 zigzag markings ; umbilicus with a large white entering callus. 



Length, 15 mill. 



Australia^ Philippines^ Jloluccas, Viti Is. 



X. ABBREVIATA, Sowb. PI. 6, figS. 6, 7. 



Livid, bifasciately maculated, white-banded and slightly 

 wrinkled at the suture ; umbilicus closed by the callus ; aperture 

 chestnut within. Length, 12 mill. 



? 3Iediferranean Sea. 



Possibly a form of one of the well-known European species ; 

 only known to me b}' Sowerby's figures. 



N. MARMORATA, H. Adams. PI. 6, fig. 9. 



Whitish, marbled with chestnut and somewhat flammulate at 



the suture, a lighter marbled band on the periphery ; umbilicus 



partl}^ reduced by the superior callus ; columellar coilus and 



interior tinged with chestnut. Length, 16 mill. 



Canary Islands, Mediterranean. 

 It is N. Pretoi, Hidalgo. 



N. viTTATA, Gmelin. PI. 6, figs. 10-12. 



Yellowish brown, vittate Avith chestnut, or laciniatcd ; umbili- 

 cus with a central entering ridge. Length, 20 mill. 



llorocco, Algiers, So. Coast of Spain. 



N. textilis, Reeve (fig. 12), and N. intricatoides, Hidalgo, are 

 63'nonyms. 



