856 FOSSIL POLVPLACOPHORAf 



l.LORICELLA MAGNIFICA, n.Sp. 



Plate xciv , figs.l, 1«. 

 A.nterior, and one median valve. 



Shell exceptionally elevated. Anterior valve with anterior 

 slope straight, sculptured with five prominent radial ribs, bifur- 

 cating, or with subsidiary riblets, crossed by six concentric 

 riblets. The number of slits is indeterminable owing to the worn 

 state of the specimen. Width, 26; height, 11 mm. 



Median valve : lateral areas strongly raised, irregularly sculp- 

 tured with wavy lines; central areas with similar but shallower 

 lines, crossed by numerous faint grooves. Width, 38 mm. 



This species differs from L. gigantea Ashby & Torr (Loc.^ Mor- 

 nington, Victoria) in its remarkable elevation, and generally 

 bolder sculpture. From a comparison of the median valve with 

 a corresponding valve of L. angasi Adams k Angas, the specimen 

 under review probably exceeded 70 mm. in total length. 



2. LORICELLA OCTORADIATA, n.Sp. 



Plate xciv., fig.2. 



One anterior valve. 



Shell elevated. Anterior valve with anterior slope slightly 

 concave, sculptured with eight very strongly marked and pro- 

 minent ribs, increasing in width towards the margin; the inter- 

 spaces very finely sculptured with irregular V-shaped lines. 

 Width, 22; height, 8 mm. 



3. LoRICELLA ATKINSONI, n.Sp. 



Plate xciv., figs. 3, 3a. 



One anterior, and several median valves. 



Shell moderately elevated. Anterior valve with anterior third 

 of slope convex; sculptured with ten strongly raised irregularly 

 pustulose radial ribs, crossed by a number of concentric wrinkles, 

 the lines of which, in most instances, intersect the radial ribs at 

 the pustules. Width, 20; height, 6 mm. 



Median valve: lateral areas strongly raised, with two diverging 

 pustulose ribs; central areas with marked wrinkles extending 

 horizontally to the anterior row of pustules on the lateral areas, 



I 



