82 PERISTERNIA. 



P. lauta, Reeve (fig. 69), I am inclined to place here also ; it 

 appears to be somewhat worn. I add a figure from Kiister (fig. 

 70), which is somewhat like the next species. 



P. CAROLINA, Kiener. PI. 65, figs. 67, 68, 83. 



Flesh-color or reddish with two dark chocolate bands ; roseate 

 within the aperture. Length, -66 to 1 inch. 



Mauritius, Philippines. 



Very close in sculpture and form to the preceding species; 

 distinguished by its coloration. Ricinula bella, Reeve (fig. 83), 

 is a synonym. 



P. CLATHRATA, Yalenc. PI. 65, fig. 92. 

 White, tinged with pink, aperture white. 



Length, 1-1-25 inches. 



Habitat unknown. 



At first I was inclined to place this among the numerous forms 

 of P. incarnata, Desh., but the discovery of three specimens in 

 the Collection of the Philada. Academy, all corresponding closely 

 with the figure of the type in Kiener, induces me to consider it 

 provisionally distinct. It is rather larger and thinner than P. 

 incarnata, the ribs are narrower and more numerous, the canal 

 more produced , the outer lip is not thickened nor dentate on the 

 margin, the color is entirely different. 



P. LIRATA, Pease. PI. 65, fig. 71. 



Orange-yellow on the longitudinal ribs, chocolate in the inter- 

 stices, the revolving ridges occasionally spotted with white ; 

 aperture and columella saffron-yellow ; covered with a thin, 

 membranous epidermis, roughened longitudinally. 



Length. 30 mill. 



Marquesas Isles. 



P. GEMMATA, Reeve. PI. 65, figs. 72, 74, 



Light yellow, longitudinal ribs narrower and more numerous 

 than in P. lirata ; chocolate, occasionally spotted with white ; 

 revolving sculpture impressed, instead of being ridged, as in P. 



lirata. Length, 30 mill. 



Taheiti ; Western Polynesia. 



P. lirata was figured by Reeve as a variety of gemmata ; Pease 

 subsequently distinguished it. Though at first sight very similar 



