MOLLUSC A. 59 



Torres Straits (Cqppinger) ; Cape Grenville, North-east Australia 

 (15 fms.), and Long Island, Torres Straits (Brazier). 



The operculum is narrow, deeply and acutely serrate on one 

 margin, smooth on the other, and has a raised ridge running from 

 the smaller end almost to the opposite extremity. 



53. Terebellum subulatum, Lamard-. 



Hah. Flinders Is., Clairmont Is., North-east Australia, 1 1 fms. 

 (Coppinger). 



54. Cypraea arabica, Linn. 



Hah. Port Molle coral-reef. 



55. Cypraea lynx, Linn. 

 Hah. Port Molle coral-reef. 



56. Cypraea annulus, Linn. 

 Hah. Port Molle coral-reef. 



57. Cypraea errones, Linn. 



Hah. Port Molle, Queensland (Coppinger) ; New South Wales, 

 rare ! (Angas) . 



The only example of this species from the above locality is of 

 unusually small size. It is only 19 millim. in length and lOi- wide. 



58. Cypraea walkeri. 

 Gray, Reeve, Conch. Icon. figs. 50 a, b, &c. 



Hah. Flinders Is., Clairmont Is., North-east Australia, 11 fms., 

 sand and mud ( Coppinger) ; Philippine Islands (Sowerhy, Tfies.); 

 Palm Island and Cape Grenville, North-east Australia, also Darnley 

 Island, Torres Straits (Brazier). 



59. Ovula (Radius) angasi. 



Ovulum angasi, Adams, Reeve, Conch. Icon. figs. 43 a, b. 

 Yolva angasi, Angus, Froc. Zool. >S'«c. 1867, p. 207. 



Hah. Port Curtis, 11 fms., sand and shell bottom (Coppinger) ; 

 Port Curtis (Reeve) ; Watson's Bay, New South Wales, on a branch 

 of red Gorgonia, amongst the rocks at extreme low water (Angas). 



In the brief description in the ' Conchologia Iconica ' one or 

 two important characters are not noticed. The dorsal surface of 

 the shell towards both ends is very prettily sculptured in an 

 oblique direction with fine wavy striae, as indicated in the figure 

 in the above work, the waviuess being due to the fine transverse 

 lines of growth. The colour is white, more or less transparent, 



