1S67.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 921 



58. ClIIONE (ClRCOMPHALUs) ROBORATA. 



Venus voLorata, Hanley, P. Z. S. 18-14, p. Kil ; Reeve, Couch. 

 Icon. Venus, pi. 23. f. \V6. 



A solid, rounded species, less inflated than V. calophylla, of a 

 waxy-white colour, with the concentric ridges very numerous, thick- 

 ened, and curved inwards. A single example only of this sliell was 

 dredged at the "Sow and Pigs" bank, Port Jackson; in Tasmania 

 it is of frequent occurrence. Length 1 inch 2 lines*. 



59. Chione (Circompiialus) calophylla. 



Venus calophylla, Hanley, Recent Shells, App. p. 3G1, pi. IG. 

 f. 26; Reeve, Conch. Icon. Venus, pi. 23. f. 114. 



A very elegant species, with distant, thin, erect frills, the surface 

 of the valves between which is smooth ; white or pale flesh-colour. 

 Dredged in black mud at the mouth of Lane Cove, and at Port 

 Stephen. Length l^inch. This shell may at once be distinguished 

 from the still more beautiful V. lamellata. Lam. (from South Au- 

 stralia), by its rounded form, smaller size, and the erect frills being 

 nearly smooth, and not grooved on their undersides. 



60. Chione (Circomphalus) alatus. 



Venus alatus. Reeve, Conch. Icon. Venus, pi. 18. f. 83. 



A solid, nearly smooth species, broadly rayed with pale brown, 

 with a few erect ridges at the posterior side. The young shells are 

 more or less distantly ridged throughout. From deep water on the 

 coast, at Wollongong, Port Stephen, &c. Length 2 inches 3 lines. 

 I obtained several specimens of this species on the beach at Porirua, 

 Cook's Straits, New Zealand. 



61. Chtone (Timoclea) australis. 



Ve7ms australis. Sow. Thes. Conch, p. 48, pi. 157. f. Ill, 112; 

 Reeve, Conch. Icon. Venus, pi. 22. f. 107. 



A pretty, ovate species finely ridged and cancellated, and blotch- 

 rayed with chestnut. Interior rose-purple. Dredged at "Watson's 

 Bay. Length 1 inch 3 lines. It occurs also in South Australia and 

 at Swan River. 



62. Chione (Marcia) fumtgata. 



Venus fumigata. Sow. Thes. Conch, p. 102, pi. 159. f. 152-155; 

 Reeve, Conch. Icon. Tapes, pi. 7. f. 31. 



A somewhat inflated, ovate species, acuminately produced poste- 

 riorly, smooth, and of a light olive-grey colour throughout, with the 

 posterior slope of the dorsal margin grooved. Dredged in Illawarra 

 Lake. Length 1^ inch. 



* The Venus isalellina, Phil. (Reeve, Conch. Icon. pi. 23. f. 112), stated to come 

 from " Sydney," I have never met with tlicre. My specimens are tVom Port 

 Curtis. It seems to be intermediate between V. calophylla, Hani., and /". ch/sera, 

 Chemn., the latter a well-known Chinese species, which Mr. Ueeve curiously ignores. 



Proc. Zool. Soc— 1867, No. LIX. 



