CALTPTR^A. 249 



Shell elongate, curved ; upper surface flat, or slightly concave ; 

 apex marginal; smooth, externally concentrically striated; interior 

 highly polished ; plate small, convex. 



Dimensions. — Length 15-5 mm.; breadth 8-5 mm. 



Form, and Loc. — Pliocene : Wanganui, ]S"ew Zealand. 



G. 9725. An example of the neanic stage of growth. 



lOld Collection.'] 



Crepidula, sp. 



The following species from the Sir James Rector Coll., from 

 New Zealand, are indeterminable : — 



G. 9565. Cast in micaceous sandstone of a highly convex 

 species, angulate towards the apex, which is lateral. Miocene: 

 Port Hills, Nelson. 



G. 9579. Cast of a narrow, highly convex species, allied to 

 C. incurva. Miocene ("Upper lledcliffe beds): Red Cliff, Rakaia 

 river, Canterbury. 



G. 9630. Cast of a specief; 42 mm. in length, broad, flattened, 

 apex curved and lateral. Miocene : Akuakua, 



Family CALYPTR^ID^. 



Genus CALYPTR^A, Lamarck. 



[Mem. Soo. Hist. Nat. Paris, 1799, p. 78; non Lamarck, 1801.] 



Infundibulum, Sowerby, Min. Conch, vol. i. 1812, pi. xcvii. (non 



Montfort, 1810). 

 Trochita, Schumacher, Essai jSTouv. Syst. Habit. Testaces, 1817, 



p. 184. 

 Galerus (Humphrey), H. and A. Adams, Gen. Rec. Moll. vol. i. 



1854, p. 367. 



Shell conical, trochiform, protoconch central ; aperture almost 

 circular, the inferior aspect furnished with a spiral plate, the 

 anterior border of which adheres to the periphery on the one side, 

 and ends in a false columella on the other, in the neighbourhood 

 of which it is deeply sinuous. 



^i/pe. — Patella chinetisis, Linnasus. 



