Submenus PRIS<H;A>TI-:I: Moreh, 



Shell very solid, ovate or suicflobular, dark colored, imperi'orate; 

 aperture large, oblique; Operculuin inside yellow -. suheom-ave, with 

 SUbmarginal, basal nucleus; outside very convex. 



/''Tin-in a rrnriiii; . 



Amyxa Trosehel, 1852, is a synonym. 



T. NIGER Gray, 1839. PL 42, fi-. 42. 



Shell ovate, very solid, impertbrate, deep dull purplish or bluish 

 black ; spire short, convex, blunt; whorls .")-<;, somewhat ilnttcncd 

 below the sutures, with superficial spiral lira', and marked with liirht 

 incremental stria' ; aperture large, very oblique, ovate, silvcrv in>ide. 

 rounded below; outer lip slightly fluted within; columella wide, 

 white, bearing on its face a longitudinal rib whic-h rises in the region 

 of the umbilicus; parietal wall eroded, white, smooth, or with three 

 white transverse ruga?. Alt. 25-27, diam. 25-.SO mill. 



Coasts of Chili mill I'n'ii. 



Anu/.ra nlyrn Troscliel and possibly T. Iu(/nbri* Kinr, ( l' s; U), are 

 synonymous. 



Operculum oval, concave within, buti', with 2-3 very rapidly in- 

 creasing whorls, nucleus one-fourth the distance across the face from 

 basal margin ; outside white, very convex, obsoletely rugose, (pi. 

 69, figs. 32, 33.) 



The animal has four lateral filaments upon the epipodial line on 

 either side. 



An example of which Fischer gives measurements is larger than 

 any I have seen. Alt. 38, diam. 35 mill. 



T. ELEVATI-S Souleyet, 184 . PL 46, figs. 12-14; pi. 55, ti.-r. 73. 



Shell ovate-conic, imperforate, ashy-black, spire acute, elevated : 

 whorls 5, convex, slightly excavated at sutures, nearly smooth, ob- 

 soletely spirally lirate; last whorl large, convex below; aperture 

 ovate, silvery within ; lip black ; columella planate, depressed-con- 

 cave, not produced at base. Alt. 13, diam. 12 mill. 



Coast of Chill, 



Operculum yellowish inside, ovate, with two to three whorls and 

 sublateral nucleus; outside convex, white, rugose, subumbilp 

 Hupe (pi. 55, fig. 73,) is a synonym. 



