30 



ZEUXIS. 



X. Sro_t IJOKKXSIS, A. Ad. PL <}, figs. 72, 7:]. 

 Yellowish white, three banded with chestnut. 

 Length. '7-1 inch. 



Indian Ocean, Philippine*, Central Polyu, 



\ narrower form than any of tlie preceding, mid connecting 

 undoubtedly with N. scalaris, A. Ad. Except the one. In-low 

 the coronal of tubercles around the suture, the revolving lines 

 :ire only apparent towards the base of the shell. N. caelala. \. 

 Ad. (fig. 73) appears to be the same. 



N. i-AiMLLosA, Linn. PI. 9, figs. 74, 71. 



Whitish, more or less blotched with yellowish brown, spire 

 usually pink tipped. Length, 1-25-2-25 inches. 



Philipjrinc Islands, Central Polynesia. 



JV xeminodoMi., A. Ad. (tig. 71), may connect this form with 

 the last, and through it, with N. mon.it e. 



.Subgenus Zeuxis, H. and A. Ad. 



With this group is united Telaxc-Oj II. and A. Adams, the 

 characters by which those authors distinguish them being, in 

 some cases at least, dependent upon the age of the specimens ; 

 juvenile forms belonging to Telasco, adult to /<>.u.r.i*. To be 

 sure, none of the subgeneric groups have sullicient clain 

 distinctness, but in this case I am utterly unable to distinguish 

 them. Messrs. Adams give as characters of .TWasco, " inner lip 

 spreading, outer lip simple, acute;" but many well-grown 

 species have the inner lip with well-defined margin to the callus, 

 and all of them, when adult, have a thickened or externally 

 variced outer lip, dentate within. Zeu.ri* is said to be " covered 

 with an epidermis," but in most of the species referred to it. 

 then 1 is certainly no epidermis. For N. el> J </an.<, Ileeve. M< 

 Adams make a subgentis Zaphon, but as I consider that shell a 

 svnonym of A'. /////</, (Jmel., tlie type of Xrii.rix, of CO1 

 ZiifiJion becomes a synonym. 



N. T^ENIA, (Jmel. PI. <), ligs. Tfi 



Chocolate or chestnut brown, with usually a central, narrow, 

 light band; spire whorls ribbed, body whorl varying from 

 smooth to plicate-ribbed. Length, T25-1 '75 inches. 



Ceylon, Singapore, Aimtrafi *ia. 



