LAMELLIBKASfCHIATJ:. 71 



brown ; interior white in the centre with more or less violet round the 

 margins ; very variable in colour. Height, '7 ; length, I'l. 

 Common. Philippines and Valparaiso. 



66. C. gibbosa, sp. nov. Ovato-trigonal, gibbous, sub-equi- 

 lateral, longitudinally grooved, lunule cordate. Yellowish white ; 

 interior white in the centre with more or less brownish purple round 

 the margin. Height, - 55 ; length, '65. 



A single right valve only, but common as a fossil at "Wanganui. 



* 67. C. paupercilla, Deshayes, Gat. Conch., Brit. Mus., p. 158. 

 Sub-cordate, smooth, sparingly marked with reddish spots and veins 

 on a brownish ground. 



New Zealand (British Museum). Australia. 



68. C. alatllS, Reeve. Solid, nearly smooth, broadly rayed with 

 pale brown, with a few erect ridges at the posterior side. The young 

 shells are more or less distantly ridged throughout. Length, 2'25. 



Porirua (GK F. Angas). Australia. 



CALLISTA. 



Ovato-oblong ; a small, anterior, lateral tooth ; pallial sinus broad, 

 oblong, profound, horizontal ; margin entire ; three cardinal teeth in 

 each valve. 



69. C. multistriata, Deshayes, I.e., p. 64. Oval, sub-elongate, 

 finely concentrically striated, anterior end shorter, posterior sub- 

 acuminate ; lunule ovate, reddish. Variegated and interruptedly 

 radiated with brown, fulvous, or pink. Height, '55 ; length, '85. 



70. C. dismpta, Deshayes, I.e., p. 69. Oval, sub-compressed, 

 finely concentrically striated ; anterior end rather short, posterior sub- 

 acuminate ; lunule excavated, dorsal margin arched, variegated with 

 large brownish purple spots. Yellowish white, spotted and interrupt- 

 edly rayed with yellowish brown, or purple. Height, '9; length, 1'05. 



Stewart's Island. Australia. 



DOSINIA. 



Orbicular, compressed ; pallial sinus oblique, triangular ; hinge 

 large, with three cardinal teeth in each valve, and an anterior lateral 

 tooth ; shell ornamented with concentric stria?. 



71. D. anus, PlriUppi ; Artkemis australis, Gray, Dieff. N.Z., ii., 

 p. 249, nee Venus australis, Quay. Orbicular, longer than high, with 

 close elevated concentric laminae, decreasing in number towards each 

 extremity, where they are higher and reflexed towards the umbones ; 

 hmule cordate, deeply impressed, lamellate ; margin of tooth plate 

 much sinuated, anterior cardinal tooth striated ; pallial sinus hori- 

 zontal, the angle pointing below the anterior adductor impression. 

 Pale pinkish brown ; interior white, getting violet round the margin. 

 Height, 2-45 ; length, 26. 



Common. 



