100 
er 9. T. levis, Verco. 
Ref.—Antea, p. 87. 
Hab.—Backstairs Passage, St. Vincent Gulf, South Australia, 
22 fathoms, dredged alive, one example (J. C. Verco). 
GENUS PURPURA. 
1. P. suceineta, ifartyn. 
Ref.—Univ. Conch., II., pl. 45. 
Tryon gives South Australia as the metropolis of this species 
(Man. of Conch., vol. Il., p. 170), but the form figured by 
Martyn, having strong revolving ribs with excavated sides, is 
very rare on the South Australian coast. It would appear, how- 
ever, that P. textiliosa, Lam. (Edit. Desh. 2, vol. X., p. 77), is only 
a variety of P. succincta, and this is a very common shell here. 
Tryon also affirms the identity of P. egrota, Reeve (Conch. Icon. 
1846, sp. 42), with P. mancinella, Linn. (Syst. Nat. Edit. 12, 
1,219), both of which are tuberculate forms. From a large num- 
ber of specimens we have been able to obtain complete series of 
gradations between P. succincta and P. textiliosa, and between 
P. textiliosa and P. egrota, proving them all to be but variations 
of a common species. As P. swccincta, Martyn, has priority of 
description, this is chosen as the name of the species, and the rest 
are regarded as varieties. This is satisfactory, too, inasmuch as 
a form closely resembling the typical shell is the first to appear 
paleontologically in our Miocene strata (este, Tate). 
2. P. striata, Martyn (Buccinum striatum). 
Ref.—Univ. Conch., t. 7; is also given by Tryon as asynonym 
for P. swuccincta. 
It is unknown to local collectors, but included here on the 
authority of Brazier (P.L.S., N.S.W., vol. V., p. 481, 1881). 
3. P. Baileyana. Ten.- Woods. 
Ref.—Proc: Roy. Soc., Victoria, 1880, p. 80. 
Very rare in South Australia. 
Hab.—Uiving on rocks, Guichen Bay (4etz). 
GENUS RICINULA. 
1. R. Adelaidensis, Crosse. 
_ Ref.—Jour. de Conch., 1865, vol. XITT., p. 50, t. 2, fig. 1. 
Specimens of type and two varieties, A. procerula and R. aurea, 
from Port Adelaide and Gulf St. Vincent. / 
_ The Malacological Section are of opinion that Z'rophon 
littorinoides, Ten.-Woods (Proc. Roy. Soc., Tasmania, 1875, p. 
135), and Zrophon propinqua, Ten.-Woods (Proc. Roy. Soc., 
