72 LAHELLIBRANCHIATA. 



72. D. Sllbrosea, Gray, Dleff. N.Z., ii., p. 2-19. Orbicular, 

 rather longer than high, closely concentrically striated, the strife 

 decreasing in number and getting rather higher at each end ; lunule 

 cordate, deeply impressed, striate ; margin of tooth plate very slightly 

 sinuated ; anterior cardinal tooth slightly striated or smooth ; pallial 

 sinus ascending, the angle pointing at the anterior adductor impression. 

 Pale pinkish white, sometimes pinker at the umbones. Height, 1'9 ; 

 length, 1-95. 



Common. Chatham Islands. Persian Crulf (?). 

 Very like I), japonica. The Natives call this shell, and also Tapes 

 intermedia, " hakari." 



CYCLINA. 



Orbicular, thin ; pallial sinus oblique, triangular ; hinge moderate 

 of three cardinal teeth in each valve, but no anterior lateral tooth ; 

 shell smooth. 



73. C. kroyeri, Plnlippi. Orbicular, rather compressed, very 

 finely concentrically striated, the stria; more distant and more elevated 

 towards the posterior end, thin ; umbones small, uncinate ; lunule cor- 

 date, impressed, margined ; ligament sub-enclosed ; posterior tooth of 

 the right valve large, deeply bifid. White. Height, 1 ; length, 1. 



Also found in Chili and Peru. 



TAPES. 



Ovato-oblong, inequilateral, margin entire ; three cardinal teeth in 

 each valve, simple or bifid ; pallial sinus deep, oblong, horizontal. 



74. T. intermedia, Quoy, I.e., iii., p. 526. Ovate, transverse, 

 sub-truncated posteriorly, concentrically striated, decussated by very 

 fine radiating striae ; lunule lanceolate, broad ; hinge three-toothed, 

 two of which are bifid. Brownish or yellowish white ; interior white, 

 or grey, more or less marked with violet at the posterior end. Height, 

 1-75 ; length, 2 25. 



Common. 



The young shell is yellowish, more or less marked with fine 

 purplish brown waved lines The Natives call this shell, and also 

 Dosinia subrosea, " hakari." 



* 75. T. fabagella, Deslmycs, Proc. Zool. Soc., 1853. Ovate, 

 inequilateral, rather compressed, thin, fragile ; anterior end shorter, 

 obtuse ; posterior broader, obliquely truncated ; dorsal margin straight, 

 ventral arched ; finely concentrically striated, much fewer and lamellate 

 at the posterior end ; front and middle finely radiately striated ; um- 

 bones small, quite smooth ; pallial sinus deep, trigonal, base broad. 

 White both inside and outside. Height, - 5 ; length, '75. 



76. T. galactites, Lamarlc, I.e., vi., p. 359. Ovate ; attenuated 

 in front and truncated behind, with strong concentric lamina?, which 

 are obsoletely decussated by very fine radiating lines. Yellowish 

 white ; interior white, yellowish behind. Height, 1*4 ; length, 1*9. 



Chatham Islands. Australia. 



There are uo Now Zealand specimens in the Colonial Museum. 



