LAMELLIBRANCniATA. 



23 



Family — Caediid^. 



CARDIUM. 



51. C. Striatulum, Sowerhy ; Cat. Marine Moll., p. 73. 

 Localities. — Wanganui (u) ; Shakespeare Cliff ; Chatham Islands ; 



White Cliffs, Taranaki ; Motanau (l)?. 



52. C. spatiOSUm, sp. nov. Large, sub-trigonal, flattened be- 

 hind ; posterior end sub-angled ; anterior rounded ; with about thirty- 

 eight radiating rounded ribs, which are ornamented with strong re- 

 curved scales at the anterior and marginal portion of the median areas ; 

 and crossed near the margin with concentric, undulating, recurved, 

 imbricating laminae, which get scaly at the posterior end ; umbones 

 inflated, sub-spiral, curved to the front ; lunule cordate, longitudinally 

 striated ; anterior lateral tooth of right valve short, high, and pointed ; 

 posterior longer, but not so high ; the two anterior cardinal teeth in 

 the right valve moderate, the posterior small, both directed backwards ; 

 ligament plate, short, thick, strong ; margin with short deep grooves 

 on the inside. Height, 4 ; length, 4"5. 



Localities. — Waitotara ; Broken Eiver (tj) ; Cape Eodney ; East 

 Coast, Wellington. 



53. C. greyi, sp. nov. Sub-orbicular, ventricose, with numerous 

 rounded radiating ribs, of equal breadth to the grooves ; ribs on the 

 posterior end much larger. Height, 2 25; length, 2*45. 



Localities. — Kawau. 



54. C. patulum, sp. nov. Large, sub-orbicular, with numerous 

 flat radiating ribs, the interspaces being very narrow on the anterior 

 and median areas, but as broad as the ribs on the posterior end. 

 Median and anterior areas with broad concentric grooves, which 

 gradually become obsolete towards the umbo ; margin crenated. 

 Height, 3-4; length, 3-4. 



Localities. — The Deans, Waipara; Broken River (l)?. 



PROTOCARDIUM. 



Posterior slope radiately striated ; remainder of the shell con- 

 centrically furrowed. 



55. P. serum, sp. nov. Ovato-trigonal, higher than long, sub- 

 equilateral ; umbones rather inflated ; posterior end w^ith fine, but 

 strongly marked, radiating striae ; anterior and median areas with 

 concentric shallow grooves ; margin finely crenated ; cardinal tooth o£ 

 right valve large, curved upwards, anterior lateral tooth of both valves 

 high, triangular. Height, 27 ; length, 2 •4* 



Localities. — Broken River (l). 



VENERICARDIA. 



56. V. austraUs, Quoij ; Cat. Marine Moll, p. 74. 

 Localities. — AVanganui (u) ; Shakespeare Cliff* ; Castle Point ; 



Chatham Islands ; Mount Caverhill. 



