BY R. TATE AND W. L. MAY. 40S 



Genus Calliostoma, Swainson, 1840. 



ZizT/phinus, Gray, 1840. 



*C. Meyeri, Vhilippi (Trochus), Zeit. f. Mai., 1848, p. 101; Conch. 

 Cab., t. 41, f. 4, 1849. 

 Z. armillatus, Kiener, Reeve, &c., non Wood. 

 Z. euglyptus, Adams, P.Z.S., 1854. 

 Type of Z. PAigly i)tus; rather common (Census). 



*C. Legrandi, Ten.-Woods, P.R.S.Tasm., 1876, p. 154; Tryon, 

 Man. Conch., xi., t. 66, f. 23. 

 Chappell Island, Bass Straits (type) ; Frederick Henry Bay, 

 W. L. May. 



*C. INCERTUM, Reeve {Zizyphinua), Conch. Icon., f. 28. 

 Tasmania (type); Frederick Henry Bay, W. L. May. 



*C. NOBiLis, Philippi {Trochus), Conch. Cab., t. 38, f. 11, 1849. 

 King Island, IF. F. Petterd !, J. H. Gatlif. 



Subgenus Astele, Swainson, 1855. 



Eutrochus, A. Adams, 1863. 



*A. SUBCARINATUM, Swainson, P.R.S.Tasm. for 1854, p. 36, t. 6, 



f. 1-2, 1855. 

 JEutrochus perspectivus, A. Adams, P.Z.S., 1863, p. 506 = -fi". 



Adamsi, Pilsbry, Man. Conch., xi., p. 402. 

 Types of all are Tasmanian; E. Coast (Census); Marion Bay, 



not uncommon, W. L. May. 



Genus Minos, Hutton, 1884. 



The author founded this genus on the Tasmanian shell Foss- 

 arina Petterdi; he placed it in the Family Stomatiidce, but the 

 "horny multispiral operculum, the dentition resembling 

 Cantharidits," and the porcellanous, somewhat iridescent, 

 interior induce us to place it in the vicinity of Gibhula. 



*M. Petterdi, Crosse {Fosmrina), Journ. de Conch., 1870, p. 303; 

 1871, t. 12, f. 1. 

 Minos Petterdi, Hutton, P.L.S.N.S.W., 1884, p. 369. 



