BY C. HEDLEY. fi91 



Marcia nitida Quoy & Gaimard. 

 (Plate xlvi., figs.2, 3 ) 



Chione nitida Hedley, these Proceedings, xxix., 1904, p. 1 94. 



This species attains a larger size than is usually recognised. 

 One specimen T gathered is 56 mm. long, and 37 high, the con- 

 joined valves being 27 mm. deep. It occurs alive at low tide in 

 sand on the margin of a Zostera-flat by the Middle Harbour 

 Sand-Spit. The animal has a long, tongue-shaped, orange-coloured 

 foot. The siphons are buff streaked and spotted with black; 

 they are of equal length and deeply divided, their apertures 

 fringed with digitate papillae. The exhalant has, besides, a lobe 

 which acts as a lid. The mantle-margin is finely fringed with 

 papillje. In his review of the family, this species was, under the 

 synonym oi ficniigata, included in Marcia by Jukes Browne.* 



Tellina astula, sp.nov. 

 (Plate lii., figs. 42, 43.) 



Tellina nitida Perry, Conchology, 1811, Pl.lv., fig. 1. Not 

 Tellina nitida Poli, 1791. Tellina perna Brazier,(not Spengler), 

 these Proceedings, ii., 1877 (1878), p.l42; Id., Whitelegge, Proc. 

 Roy. Soc, N. S. Wales, xxiii., 1889, p.238. 



Shell oblong acuminate, polished, convex, rose-pink, with broad 

 radiating bands of cream, smooth except on the rostrum. Dorsal 

 margin straight, anterior end semicircular, ventral margin 

 arcuate. Rostrum tongue-shaped, concave above, protuberant 

 posteriorly, end truncate, lower margin straight, horizontal, 

 sharply bent to continue the ventral margin. The valves differ 

 by the rostrum being bent to the right and having, in the right 

 valve, a fold at its base, absent in the left. From the umbo to 

 the extremity runs a shallow furrow. Spaced and sharply 

 engraved concentric grooves extend in the right valve over the 

 whole rostral area past the fold and notch, but, on the left, only 

 from the radial furrow to the edge. The anterior side is rather 

 longer than the posterior. Length, 155; height, 25; depth, 

 11 mm. 



Hab. — Sow and Pigs lleef, Sydney (Brazier), Broken Bay 

 (Hargraves), and Trial Bay (C. Laseron), N.S.VN'. 



* J. Browne, Proc. Malac. Soc, viii., 1909, p.233; and xi., 1914, p.87. 



