

ZEUXIS. 



Has the appearance o(' an Epidromus (Tritonida?), hut wants 

 the produced canal oi' that group. The production of true 

 va rices is certainly not a characteristic of the genus Nansa, 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. PI. 10, figs. 92-97. 



Yellowish white, usually mottled with chestnut, with a darker 

 line beneath the suture, and frequently, a chestnut central bund. 

 Length, -4-'75 inch. 



Mediterranean Sea; Atlantic Coast of Spain, Portugal; 



Madeira ; f 'anary Isles. 



This pretty little species is the victim of an immense syn- 

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

 frequently referred to as N. varidbilis, Phil., and as N. Feruxwid., 

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

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

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

 lection lias been identified with this species, but the only figure 

 cited in the description is that of a Col umbel I a. The descrip- 

 tion itself will suit almost anything. N. Maderensis, Keeve 

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

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

 mens, here become more prominent. 



N. SEMIPLICATA, A. Ad. PL 10, fig. 98. 



Yellowish, encircled by two chocolate bands. 



Length, 22 mill. 



Chusun. 

 N. TERETIUSCULA, A. Ad., PI. 10, fig. 99. 



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



Length, -fi inch. 



Eastern Seas. 



The locality is very indefinite, and the figure, notwithstanding 

 the red line, is very suggestive of N. ex Hi,*. 



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



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



, Viti Isles, Solomon Is., Peru. 



