424 



TROCHIN^. 



moniligev, A. Adams. 

 nigricans, A. Adams. 

 nitidulus, Phil. 

 pallidulus, A. Adams. 

 porcatus, Phil. 



purpuratus, Martyn. 

 rufozona, A. Adavis. 

 tenebrosus, A. Adams. 

 Zealandicus, A. Adams. 



Genus ELENCHUS, Humphrey. 



Shell elevately conoiclal, axis imperforate ; spire ele- 

 vated, acute, whorls flat, smooth, usually polished ; aper- 

 ture ovate, longer than wide ; inner lip usually with a con- 

 spicuous tooth ; outer lip internally thickened and 

 grooved. 



Ex. E. iriodon, Qnoy and Gaimard, pi. 48, fig. 5. 

 Shell, E. badius, Wood, fig. 5, a. 



The shells in this genus are thick and polished, and 

 there is usually a single tooth, more or less produced, at 

 the fore part of the columella ; the aperture is vividly iri- 

 descent within, and the surface is often ornamented with 

 varied and beautiful markings. The species are Austra- 

 lian in their geogra})hical distribution. 



Species of ElencJms. 



apicinus, Mke. 

 anstralis, Quoy and Gaim. 

 badius, Wood. 

 bellulus, Dkr. 

 elegans, Gmel. 

 gracilis, Anton. 

 iriodon, Quoy and Gaim. 

 Isetus, Phil. 



leucostigma, Mke. 

 lineatus, Lam. 

 minor, Trosch. 

 roseus. Lam. 

 rutilus, A. Adams. 

 splendidulus, Swains. 

 virgulatiis, Phil. 



