BY R. TATE AND W. L. MAY. 405 



Margarita ^Tasma/i/cr^, Ten. -Woods, P.R.S.Tasm., 1877, p. 143. 

 Minolia Tasmanica, Tryon, Man. Conch., xi., p.263, t.61, f.38-40. 

 Bass Straits and Long Bay, I'en.- Woods: N. and S. Coasts, W. 

 L. May. 



Genus Minolia, A. Adams, 1860. 



*M. prodicta, Fischer, Mon. Trochidfs, p. 395, t. 118, f. 1. 

 Derwent River Estuary, W. L. May. 



Genus Monodonta, Lamarck, 1799. 



Subgenus Trochocochlea, H. & A. Adams, apud Klein, 1753. 



■*T. CONSTRICTA, Lamarck {Monodonta), 1822. 



Trochus constrictus, Quoy& Gaimard, Voy. Astrolabe, t. QQ, f. 27. 



Tasmania (type); common (Census). 



Var. taeniata, Quoy & Gaimard, t. 63, f. 15-17, 



Trochus zebra, Philippi, Conch. Cab., t. 26, f. 24. 



T. multicarinatus, Chemnitz; T. porcata, Adams. 



Common (Census). 



*T. AUSTRALIS, Chemnitz {Monodonta); Lamarck. 



T. concameratus, Wood, Index Test. Suppl., t. 6, f. 35. 



T. striolatus, Quoy & Gaimard, Voy. Astrolabe, t. 63, f. 18-22. 



King Island, E. Tate; (Census). 



*T. MELANOLOMA, Menke {Monodonta), 1843; Philippi, Abbild., 

 ii., t. 5, f. 2, p. 188, 1845. 

 N. Coast, W. F. Petterd !. 



Subgenus Diloma, Philippi, 1845. 



*D. ODONTis, Gray {Trochus), Wood, Index Test. Suppl., t. 6, 

 f. 37; Philippi, Conch. Cab., 1849, t. 24, f. 17. 

 Gihhula tesserula, Ten. -Woods, P.R.S.Vict., xvii., 1881, p. 81, 



t. 1, f. 5 (very young D. orlontis). 

 Common (Census); King Island, R. Tate; S. Coast, common, 

 W. L. May. 



*D. Adelaide, Philippi {Trochus), Conch. Cab., 1849, t. 24, f. 1. 

 (PI. xxiv., fig. 31). 

 D. australis, Ten.-Woods, P.R.S.Tasm., 1877, p. 145. 



