POLYTROPA. 177 



P. BICONICA, Hutton. 



Shell small, widely fusiform ; spire short arid pointed ; last 

 whorl wide above and narrowed below, with spiral ribs and slight 

 transverse plicae. Whitish, shaded with dark brown; within, 

 dark purplish brown, with white teeth inside the lip. 



Length -4. di.im. '28 inch. 



New Zealand. 



Not figured.' The name has been already used by Anton. I 

 am not able to identity it. 



I*. 11ETIA1UA, Hllttoil. 



Shell oval-fusiform ; whorls carinated, with four or five spiral 

 ribs in front of the carinae, and a small one behind it on 

 the last whorl, crossed by transverse plica? at regular intervals, 

 forming a series of squares on the surface. Whole shell covered 

 with delicate transverse foliations. Aperture oval; columella 

 curved; canal short and slightly bent. Grayish white; purplish 

 within. Length '9, diam. - 5 inch. 



AV/r y,c<il<i ltd . 



P. piiWAsi, Velain. PI. 54, figs. 162, 167, 170, 17*2. 

 A polymorphous species ; whitish or pale rosaceous. 

 Length. *75-l'2 inches. 



/.sVr /;/' St I \iill, Imlititi <)<<< 1 1 n. 



The type is so close to /'. /^/^->/x, Hombr., that I suspect them 

 to bo identical; in which case the latter name will take prece- 

 dence. Mr. Velain has selected from the numerous forms of this 

 species the following mimed varieties : 



Var. muliistriata, fig. 172. 

 Var. semicostata, fig. 170. 

 Var. cincta, fig. 162. 

 P. PATENS, Hombr. et Jacq. PI. 54, tig. 171. 



Light gray, cinereous within. Length, 21 mill. 



Probably = P. Dumasi. New Zealand. 



P. VARIABILIS, Desh. 

 Chocolate ; violaceous within ; lips crenulated. 



Length, 1-3 inches. 



hie of Bourbon. 



Allied to P. patens, Jacq., evidently. 

 23 



