24 



LAMELLIBEAl^'CHIAT A . 



57. V. intermedia, sp. nov. Oval, very inequilateral ; posterior 

 end truncated, with about twenty-two equal ribs, which are nodular on 

 the upper half and transversely striated towards the margin, lunula 

 very small, cordate. Height, 1*45 ; length, 17. 



Localities. — Motanau (l) ; Hurunui Mound ; Lower G-orge of the 

 Waipara; Weka Pass (m). 



Var. B. — Ovato-trigonal, rounded at both ends ; with about twenty- 

 two smooth low ribs. Height, 1'05 ; length, 1-05. 

 Localities. — Awamoa. 

 Perhaps only a variety of V. australis. 



Family — Lrc miDM . 

 LUCINA. 



58. L. divaricata, Lamarh; Cat. Marine Moll., p. 74. 

 Localities. — Wanganui (u) ; Awamoa. 



MYSIA. 



59. M. Zealandica, Q-ray ; Cat. Marine Moll, p. 75. 

 Localities. — Wanganui (tj) ; Shakespeare Cliff ; Puketapu ; Awa- 

 moa. 



Family — Ceassatellid^. 



CRASSATELLA. 



Hinge with two diverging cardinal teeth, and generally one lateral 

 tooth in each valve. 



60. C. ampla, Zittel, Voy. Novara, Falce., p. 46. Trigonal, con- 

 vex, sub-equilateral, thick, irregularly concentrically striated ; anterior 

 end broad and obtuse, posterior slightly attenuated ; hinge very broad 

 and thick, cardinal tooth of the right valve attenuated, and bifid at 

 the base ; cartilage pit large and deep ; left valve with two teeth. 

 Height, 3-2 ; length, S S. 



Localities. — Cape Eodney (Hochstetter) ; Kawau ; Broken 

 Eiver (u). 



61. C. attenuata, sp. nov. Ovate ; inequilateral ; broad and 

 rounded in front, produced and tapering behind ; posterior dorsal 

 margin straight ; hinge moderate ; irregularly concentrically striated. 

 Height, 4-2 ; length, 6. 



Localities. — Broken Eiver (l). 



62. C. trailli, sp. nov. Ovato-trigonal, inequilateral ; rounded in 

 front ; attenuated, flattened, and obliquely truncated behind ; closely 

 concentrically ribbed, the ribs passing into fine striae on the posterior 

 flattened portion hinge rather small ; lunule impressed lanceolate ; 

 right valve with one, and the left with two teeth. Height, 1*3 ; 

 length, 1-65. 



Localities. — Awamoa. 



