Hvrros.—On new Tertiary Shells.. 828 
convex, the posterior also slightly convex, ventral margin rounded. Left 
valve with two cardinal teeth, the anterior bifid; posterior lateral tooth 
small, the anterior one obsolete. Right valve (?). 
Length, +58 inch; height, *46 inch. 
Locality. Wanganui. 
Kellia robusta. 
Shell orbiculo-triangular, nearly as high as long, dei irati nearly 
equilateral, very delicately regularly concentrically striated. Anterior and 
posterior dorsal margins nearly straight, sub-equal, the anterior rather the 
steeper ; ventral margin and both ends rounded. Right valve with a lateral 
tooth on each side, both of which are nearly parallel with the margin. 
Anterior tooth the stronger of the two. 
Length, :12 inch; height, *11 inch. 
Locality. Petane. 
Kellia effossa. 
Shell oblongo-triangular, nearly equilateral, rather swollen, rather 
coarsely irregularly concentrically striated. Anterior dorsal margin rather 
concave, the posterior one rather convex, ventral margin flattened, the two 
ends rounded. Right valve with a lateral tooth on each side and a flattened 
concave portion in the centre ; posterior lateral sharp and nearly parallel to 
the margin; the anterior thickened and curved inward forming a deepish 
pit between it and the dorsal margin. Left valve with a lateral tooth on 
each side and a cardinal tooth in the centre, sloping backward. 
Length, :18 inch ; breadth, *1 inch. 
Locality. Petane. — 
Loripes concinna. 
Shell small, sub-orbicular, the umbos turned forward, truncated behind, 
compressed, regularly very finely concentrically grooved. Anterior dorsal 
margin hollowed under the umbo, then convex; posterior dorsal margin 
slightly convex, descending suddenly near the posterior end; anterior end 
sometimes slightly undulated ; ventral margin rounded.  Lunule lanceolate. 
Anterior adductor impression elongated. Teeth: right valve one cardinal, 
the posterior lateral obsolete; left valve with two diverging cardinals, the 
laterals obsolete. 
Length, ‘3 inch; height, ‘27 inch. 
Locality. Wanganui and Petane. 
Mysia ampla. 
Shell ‘sub-orbicular, rather thick, concentrically striated; posterior 
dorsal margin slightly concave, the anterior dorsal margin slightly arched. 
Interior rough, slightly radially striated, the adductor impressions and 
pallial line well marked. Hinge moderate; left valye with two diverging 
cardinal teeth, the anterior of which is grooved ; lateral teeth obsolete. 
