32 ZEUXis. 



Has the appearance of an Epidromua (Tritonidae), but wants 

 tlie produced canal of that group. The production of true 

 varices is certainly not a characteristic of the genus Nassa^ yet 

 the species has been collected often enough to show that it is 

 not an abnormal condition : it is strange that Messrs. Adams 

 did not make a new genus for it. 



N. CuviERi, Payr. PL 10, figs. 92-91. 



Yellowish white, usually mottled with chestnut, with a darker 

 line beneath the suture, and frequentl}^, a chestnut central band. 

 Length, •4-75 inch. 



Mediterranean Sea; Atlantic Coast of Spain, Portugal; 



Madeira ; < anary Isles. 



This pretty little species is the victim of an immense s^-n- 

 onymy, and of much uncertainty as to nomenclature. It is 

 frequently referred to as N. variabilis, Phil., and as N. Ferussaci, 

 Payr.; less frequently as N. unifasciata, Lam., N. nitidula, 

 Linn., N. costidata, Ren., and a dozen other names. As regards 

 the Linuean name, the specimen bearing it in the Linnean col- 

 lection has been identified with this species, but the onl^^ figure 

 cited in the description is that of a Columbella. The descrip- 

 tion itself will suit almost an3'thing. N. Maderensis, Reeve 

 (fig. 97), diflfers only in the numerous revolving, interrupted, 

 chestnut lines, which, faintly seen in many Mediterranean speci- 

 mens, here become more prominent, 



N. SEMIPLTCATA, A. Ad. PI. 10, fig. 98. 



Yellowish, encircled by two chocolate bands. 



Length, 22 mill. 



Chusan. 

 N. TERETIUSCULA, A. Ad., PI. 10, i\'^. 99. 



Yellowish or ash-olive, with a narrow red revolving line. 



licngtli, "fi inch. 



Eastern Seas. 



The locality is very indefinite, and the figure, notwithstanding 

 the red line, is very suggestive of N. exilis. 



N. EXiLis, Powis. PI. 10, figs. 100-102. 



Ash-olive, with a central white band. Length, •4--7 inch. 



Panama, Viti Isles, Solomon Is., Peru. 



