922 PELECYPODA. [Eulititi'llibranchia. 



Type in Mr. Webster's collection. 



Hal. Orua Bay, Manukau Harbour ; plentiful in 3 fathoms. 



I have not seen this species. 



2. Erycina parva, Deshayes. 1856. Plate 53, figs. U). a, h. 



Kdlia parva, Deshayes, P.Z.S., 1855 (1856), 182; Tryon, Proc. Acad . 

 N. Sci. Philad., 1872, 231. Erycina parva, Desh. : Hedley, T.N.Z.I., 

 xxxviii, 74. E. ncupunrta, Hedley, Mem. A.M., iv, 1902, 321, f. 60 in 

 text. 



Shell small, inflated, oblong, finely punctate. Beaks not pro 

 minent, broadly convex. Anterior end slightly longer than the pos- 

 terior, both rounded, the dorsal margins straight, gently sloping ; 

 basal margin almost straight. Sculpture consisting of fine punctures, 

 arranged in curved oblique lines, and distinct concentric lines. Colour 

 a dirty white. Interior whitish, with concentric white bands, polished. 

 Margins smooth, solid. Hinge : In each valve a roundish cardinal 

 tooth, and anterior and posterior lateral tooth, both of which are 

 solid and arcuately raised. Eesilium posterior, small. Adductor- scars 

 subequal. Pallial line simple, entire. 



Diameter Ant.-post., 3-3 mm. ; dorse-ventral, 24 mm. : thick- 

 ness, 2 mm. 



Tt/pe in the British Museum (Cuming collection). 

 fjafj. Off Great Barrier Island, in 110 fathoms ; near Cuviev 

 Island, in 37 fathoms (Captain Bollons) ; Narrow Neck, Auckland 

 Harbour, in sand (H. S.) ; Queen Charlotte Sound, in 16 fathoms 

 (Captain Bollons); Dusky Sound, in 30 fathoms; Stewart Island, 

 in 18 fathoms. Also off New South Wales, in 41 to 75 fathoms. 

 Fossil in the Pliocene. 



Genus 2. KELLIA, Turton, 1822. 



Kellia, Turton, Dithyra Brit., 1822, 56. Type : K. suborbicularis, Mtg. 

 Tellimya, Sect, i," Brown, 1827. Chironia, Deshayes, 1839. Oronfhea, 

 Leach,' 1852. Goodalliopsis, R. & M.-C., 1863. Zoe, Monterosato, 1878. 

 ? Divarikellia, Cossm., 1887. 



Animal : Both gills with direct and reflected inner and outer 

 laminae ; the viscera are contained within the body-mass. Hermaph- 

 rodite. 



Shell rounded and inflated, concentrically striated or smooth : 

 with an obsolete amphidetic external ligament and a large strong 

 internal resilium without a lithodesma ; in its fullest development 

 with 2 anterior and 2 posterior teeth in each valve, of which the 

 anterior ones are shorter and usually regarded as cardinals, which 

 may be concrescent at their umbonal ends, forming a A-shaped tooth, 

 or may be free and pustular ; the interior face of the valves commonly 

 shows radial striation, and the valves are frequently distorted, through 

 the effect of the nestling habit. 



The species retain the young between the valves until pretty well 

 grown, and these young are much more compressed than the adult 



