30 



ZEUX1S. 



N. SIQUUORENSIS, A. Ad. PL 9, figs. 72, 73. 

 Yellowish white, three banded with chestnut. 

 Length, '7-1 inch. 



Indian Ocean, Philippines, Central Polynesia. 



A narrower form than any .of the preceding, and connecting 

 undoubtedly with N. scalaris, A. Ad. Except the one below 

 the coronal of tubercles around the suture, the revolving lines 

 are only apparent towards the base of the shell. N. caelata, A. 

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



X. PAPJLL0.8A, Linn. PL 9, figs. 74, 71. 



Whitish, more or less blotched with yellowish brown, spire 

 usually pink tipped. Length, l-25-2'25 inches. 



Philippine Islands, Central Polynesia. 



N seminodoxa, A. Ad. (fig. 71), may connect this form with 

 the last, and through it, with N. monile. 



Suhgenus Zeuxis, H. and A. Ad. 



With this group is united Telasco^ H. 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 Zeuxis. To be 

 sure, none of the subgeneric groups have sufficient claims to 

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

 them. Messrs. Adams give as characters of Telasco, " 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. Zeuxis is said to be " covered 

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

 there is certainly no epidermis. For N. elegant, Reeve, Messrs. 

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

 synonym of N. tsenia, GmeL, the t3^pe of Zeiur.is, of course 

 Zaphon becomes a synonym. 



N. T^)NIA, GmeL PL 9, figs. 76-82. 



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

 light band ; spire whorls ribbed, bod}^ whorl vary ing from 

 .smooth to plicate-ribbed. Length, 1*25 1*15 inches. 



Ceylon, Singapore, Australia, Polynesia. 



