922 mr. g. f. angas on australian mollusca. [nov. 28, 



63. Chione (Marcia) l^vigata. 



Venus Icevigata, Sow, Thes. Conch, p. 103, pi. 159. f. 156-158. 



Flatter and less beaked than the preceding species, painted with 

 two or three zigzag rays from the umbones, and wanting the charac- 

 teristic grooving of the posterior dorsal slope. Dredged in mud in 

 Port Jackson and Port Phillip (Hobson's Bay). Length 1^ inch. 



64. Callista disrupta. 



Ci/therea disrupta. Sow. Thes. Conch, p. 117, pi. 163. f. 208, 209. 



A transversely ovate shell, with the dorsal margin arched ; smooth, 

 or very finely concentrically striated, yellowish, and painted with 

 purpHsh-brown zigzag bands and flames. Dredged at Watson's Bay 

 &c. Length 1|- inch. Found also at Moreton Bay, on the banks 

 off Stradbroke Island. 



65. Callista rutila. 



Cytherea rutila. Sow. Thes. Conch, p. 116, pi. 163. f. 205. 



More rounded and larger than the preceding species, smooth, and 

 painted with irregular interrupted bands of chestnut, and tinged with 

 rose-colour round the posterior side and ventral margin. Dredged 

 at Watson'"s Bay, and found on the beach at Cabbage-tree Cove, 

 outside the north head of Port Jackson. Length 1 inch 9 lines. 

 I have received specimens from the east coast of Tasmania 2 inches 

 3 lines across. 



66. TivELA UNDULOSA, var. 



Venus undulosa, Lam. Anim. sans Vert. vi. p. 370. 



V. variahilis, Sow. P. Z. S. 1835; Thes. Conch. Venus, pi. 158. 

 f. 142-146. 



This species varies considerably in shape and markings. At Swan 

 Biver, where it is very abundant, the shells are richly rayed and 

 marked with angular and undulating brown lines ; occasionally they 

 are white. The Port Jackson specimens, which are of rare occur- 

 rence, are smaller, more trigonal, painted sparingly with narrow ful- 

 minating lines, and clothed with a thick, silky, fibrous epidermis. 

 Dredged at Watson's Bay. Length 1 inch. 



^7. *SuNETTA ADELINE. 



Sunetta adelince, Angas, antea, p. 909, PI. xliv. f. 5. 



A pretty little species, less tumid than Meroe Mans of Eeeve (from 

 Cochin ('hina), with the lunule pinched outwards and projecting. 

 Length 8 lines. Dredged in deep water near Port-Jackson Heads. 



68. Circe undatina. 



Cytherea undatina, Lam.; Sow. Thes. Conch. Circe, pi. 138. 

 f. 22-26. 



A fine species, more ventricose than C. scripta, Linn., and ele- 

 gantly painted with broad rays, blotches, bands, and zigzag lines of 



