SUTEE : ON NEW MOLLUSCA FROM NEW ZEALAND. 213 



margin. A radial line passes from the beaks towards the margin 

 behind the anterior adductor scar, and two posteriorly, all of which, 

 however, are not very conspicuous. Length 45, height 25, 

 diameter 10 mm. 



Hob. — The species was discovered by Mr. Charles Spencer, of 

 Auckland, on the beach at Opotiki, east coast of the North Island. 

 Later on I found it washed up on New Brighton beach, near 

 Christchurch, dredged it in 6 fathoms in Akaroa harbour, and lately 

 Captain J. Bollous found specimens washed up after a gale at Hicks 

 Bay, north-west of East Cape. 



Type in my collection. Named, in compliance with the wish of the 

 late Captain F. W. Hutton, in honour of Mr. C. Spencer, a keen 

 collector and obsei'ver of moUuscan life, who also very kindly supplied 

 a photograph of the species for reproduction. 



Leptomya lintea (Hutton). PI. XVIII, Figs. 10-lOc. 

 Tellina decmsata, Lamk. : Hutton, Cat. Mar. Moll. N. Zeal., 1873, 



p. 67, non Lamk. 

 Tellina lintea, Hutton, I.e., p. 67. 

 Tellina subovata, Sow. : Hutton, I.e., p. 67 ; Journ. de Conch., 



1878, p. 47; Man. N. Zeal. Moll., 1880, p. 144; P.L.S. ^.S. 



Wales, vol. ix, p. 521, non Sowerby. 

 Tellina Strangei, Desh. : Hutton, Journ. de Conch., 1878, p. 47; 



Man. N. Zeal. Moll., 1880, p. 144; Plioc. Moll. N. Zeal, in 



Macleay Mem. Vol., 1893, p. 80; Index Faunae Nova) Zealamlia?, 



1904, p. 91, no7i Deshayes. 

 Tellina retiaria, Hutton : Trans. N. Zeal. Inst., vol. xvii, 1885, p. ;')22. 

 Hutton's diagnosis runs as follows: — "Oval, thin, pellucid, very 

 finely concentrically and transversely striated ; anterior end rounded, 

 posterior end longer, sub-angular, scarcely folded; right valve with 

 two and left valve with one cardinal tooth ; lateral teeth obsolete. 

 White. Height -6; length -82 (= 15-5 x 21 mm.). Stewart's 

 Island." 



The following emendations are here offered : — The shell is more or 

 less inequilateral, the beaks anterior. Sculpture consists of fine, 

 subequidistant concentric striae with better marked periods of rest, 

 sometimes lamellar on the posterior end, where a distinct fold runs 

 down from the beaks ; this concentric sculpture is reticulated by 

 exceedingly fine and close-set radiate striae. Escutcheon clearly 

 defined, lanceolate, with oblique sublamellar folds, devoid of radiate 

 sculpture. Epidermis easily rubbed off, thin and light yellowish. 

 Colour mostly white, sometimes inconspicuously irregularly con- 

 centrically banded with darker and lighter yellowish-brown. The 

 interior is white, porcellanous, the margins smooth. Hinge-plate 

 narrow and short ; the right valve with two simple, slightly 

 triangular cardinals, the anterior oblique, posteriorly a narrow and 

 very oblique resilium. Left valve with a stout, bifid or trifid cardinal, 

 in front of which is sometimes, but not always, a small lateral tooth. 

 Ligament short, with very slender nymphae. The anterior adductor 

 scar is oblong, not very distinct, the posterior scar round or oval and 



