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SUTER 
CUNA Hedley, 1902. 
CUNA CARDITELLOIDES sp. nov. 
Shell minute, trigonal, solid, slightly inequilateral, radially 
costate. Beaks contiguous, prodissoconchs minute, globose and 
smooth, surrounded by a narrow groove. Anterior end with the 
dorsal margin straight, descending, rounded towards the convex 
basal margin ; posterior end similar to the anterior, but the dorsal 
margin feebly curved and angled towards the basal margin. 
Lunule distinct, long, lanceolate, with a few concentric ridges. 
Sculpture consisting of about 15 equi-distant narrow smooth 
rounded radiate riblets, the interstices deep and narrower than 
the coste; concentric undulating growth-lines are distinct only 
near the base. Colour white. Interior white, porcellanous, 
shining. Basal margins crenate. Hinge broad; the right valve 
with a stout triangular cardinal tooth, sometimes bifid; left 
valve with two divergent cardinal teeth, the posterior usually 
bifid. Resilifer small. Adductor scars distinct, impressed. 
Pallial line simple. 
Length, 2.5mm.; height, 3mm.; diameter, 1.5mm. 
Type in the Canterbury Museum, Christchurch. 
Dredge Station C. 
CunaA DELTA Tate and May. 
Carditella delta Tate and May, Trans. Roy. Soe. 8S. Aust., xxiv., 
1900, p.. 102; Proc. Linn. Soc. N.S. Wales, xxvi., 1901, 
p. 434, pl. xxvu., figs. 100, 101. 
Cuna delta, Hedley, Mem. Aust. Mus., iv., 1902, p. 316. 
Station 4; Dredge Station B. 
Family CARDITIDA. 
CARDITA (Bruguiére) Lamarck, 1799. 
CARDITA CALYCULATA Linné. 
Chama calyculata L., Syst. Nat., ed. 10, 1758, p. 692. 
Cardita aviculina Lam., Anim. s. Vert., vi., 1819, p. 26. 
C. excavata Desh., P.Z.S., 1852 (1854), p. 100, pl. xvii., figs. 1-3. 
Mytilicardia tasmanica T. Woods, Proc. Roy. Soe. Tasm., 1876, 
p, 16, 
Stations 6, 22, 26 or 30; Dredge Station B. 
VENERICARDIA Lamarck, 1801. 
VENERICARDIA (S. Str.) DIFFICILIS Deshayes. 
Cardita difficilis Desh., P.Z.S., 1852 (1854), p. 103, pl. xvii. 
hes. 16, 17, 
Venericardia intermedia Hutt., Cat. Tert. Moll., 1873, p. 24. 
Stations 2, 6, 12, 20, 22, 26 or 30. 
