1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 231 



spire ; the columella is prolonged at the lower part, ami the entire 

 shell is of a peculiar rosy-violet hue. Found on the sands after 

 storms, at Bondi &c. Height 1 inch. 



30.3. Ianthina (Iodina) exigua. 



lanthina exigua. Lam. Anim. sans Vert. vi. p. 206. 



/. bifida, Nuttall, Jay's Cat. p. 295. 



1. capreolata, Mont. Journ. de Conch. 1860, pi. 2. f. 4. 



Pelagic, worldwide. Varying greatly in size ; height of largest 

 New South Wales specimens 8 lines. 



This species may be known by its sculpture, of densely set lamellar 

 striae, and by the very deep notch in the outer lip, which gives it a 

 bifid structure. 



Macgillivrayia spiniyera and Cheletropis huxleyi are often washed 

 ashore on Coodgee Beach. They are now ascertained to be only 

 the pelagic fry of certain Gasteropods. 



Subclass PULMONIFERA. 

 Fam. ELLOBiiDiE;. 



304. Cassidula zonata. 



Cassidula zonata, H. & A. Ad. P. Z. S. 1854, p. 32. 

 This species is found amongst the mangrove swamps and samphire 

 marshes at Cook's River, Botany Bay. Length ^ inch. 



Subfam. Melampin^. 



305. Ophicardilus australis. 



Auricula australis, Quoy et Gaim. Voy. de I'Astrol. ii. pi. 13. 

 f. 34-38. 



Melampus ovatus. Gray. 



This species is common on samphire swamps about Shoalhaven 

 and Cook's River. It is dark olive with pale bands. Length 

 7 lines. 



306. Ophicardelus sulcatus. 



Laimodonta sulcata, H. & A. Ad. P. Z. S. 1854, p. 34. 

 Very like the preceding, excepting that the s])ire is transversely 

 sulcately ridged. Length 7 lines. 



307. Ophicardelus quoyi. 



Laimodonta quoyi, H. & A. Ad. P. Z. S. 1854, p. 34. 

 Port Jackson. Shorter and stouter than the preceding species ; 

 of a uniform brown colour, without bands. Length 5 lines. 



308. Marinula xanthostoma. 



Marinula xanthostoma, IL & A. Ad. P. Z. S. 1854, p. 35. 



This pretty little species may be recognized by the three project- 



