172 
fathoms in Wallaroo Bay. It has hitherto been confused ‘n 
South Australia with G. Coai, Angas, so I give the following 
diagnostic characters: —G. Coa? is more solid, slightly less 
depressed, rather more concave between the carine, with 
sharper spiral lire, and a much smaller umbilicus. This last 
character is the easiest diagnostic. The radial flames are 
much fewer, the colour elsewhere is irregularly stippled in- 
stead of spirally articulated, and there are fewer colours in 
the same shell. Mr. J. H. Gatliff has sent me this shell as 
G. sulcosa, A. Adams, P.Z.S., 1851, page 186, recorded in his 
Catalogue of the Marine Shells of Victoria, P.R. Soc. of Vict. 
xiv. (N.S.), Part ii., 1902, page 132. Adams’s name is given 
in Tryon’s Man. ox Conch. xi., page 243, “unfigured and un- 
determined species,” with the habitat, Sir C. Hardy’s Island, 
North Australia. 
Astele subcarinatum, Swainson. 
Astele subcarinatum, Swns., 1854, P.R.S., Van Die- 
men’s Land, vol. il., page 36, Plate vi., figs. 1, 2; Butro- 
chus perspectivus, A. Adams, P.Z.S., Lond., 1863, page 506; 
Calliostoma (Eutrochus) Adamsi, Pilsbry., Man. Conch. xi., 
page 402. 
It has been dredged aiive at 16, 19, 20, 22, 23 fathoms, 
in Backstairs Passage, and off Newland Head. 
Zizyphinus subgranularis, Dunker, Malak. Blatt, 1871, 
page 170, No. 56, unfigured, from Bass Straits; C. subgranu- 
latum, Dunker, Man. Conch. xi., page 403, is a half-grown 
individual of the same species. This identification was re- 
ferred to Mr. Hedley, who says he had arrived at the same 
conclusion. 
EXPLANATION OF PLATE. 
Pratt XXXI. 
Figs. 1, 2, and 8. Calliostoma zietzi, Verco—Basal and pro- 
file views, and magnified sculpture. 
Wigs 4 and 5. Gena terminalis, Verco. 
Fig. 6. Gena nigra, Quoy & Gaimard. 
Wigs. 7 and 8. Astele calliston, Verco. 
Figs. 9, 10, and 11. Clanculus leucomphalus, Verco. 

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