30 



ZEUXIS. 



X. SfQuiJORENsis, A. Ad. PI. 9, figs. 72, 73. 

 Yellowish white, three banded with chestnut. 



Length, -7-1 inch. 



Indian Ocean, Philippines, Central Polynesia. 



A narrovver form than any of the preceding, and connecting 

 undoubtedly with N. ticalaris, 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) ai)pears to be the same. 



X. PAPiLLosA, Linn. PI. 9, figs. 74, 71. 



Whitish, more or less blotched with yellowish brown, spire 

 usually pink tipped. Length, r25-2"25 inches. 



Philippine Islands, Central Polynesia. 



N semiuodo.^a.! A. Ad. (fig. 71), may connect this form with 

 the last, and through it, with N. mom.le. 



tful)^cnus Zeuxis, U. and A. Ad. 



With this group is united Telaaco, 11. and A. Adams, the 

 characters l)y 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 sufiicient 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. elegans, Reeve, Messrs. 

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

 synonym of N. tsenia, Gmel., the tjqje of Zeuxis, of coui'sc 

 Zaphon becomes a synonym. 



X. TAENIA, Gmel. PI. 9, figs. 7G-82. 



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

 lioht band ; spire whorls rib])ed, body whorl varying from 

 smooth to plicate-ribbed. Length, 1-25-1 •75 inches. 



Ceylon, Singapore, Australia, Polynesia. 



