

| 100 
Oy. KR, levis, Verco. US x 7 
Lief.— Antea, p. 87. 
Hab.—Backstairs Passage, St. Vincent Gulf, South Australia, 
22 fathoms, dredged alive, one example (J. C. Verco). - 
Genus Purpura. 
| | Mick habe 1. R. suceineta, jartyn. ot SS A 
ef.—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 
Serer 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, aa 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. teatiliosa, and between 
P. textiliosa and P. egrota, proving them all to be but variations ~ 
of a common species. As P. succincta, 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 (teste, Tate). 
2.~P-striata; Martyn (Buccinum striatum). 
Ref.—Univ. Conch., t. 7; is also given by Tryon as a ane 5A 
for P. succincta. 
Tt is unknown to local collectors, but included here on the 
authority of Brazier (P.LS., N.S.W., vol. V., p. 481, 1881). 
‘oth aid 3. R, Baileyana. T'en.-Woods. 
Ref.—Proc. Roy, Soc., Victoria, 1880, p. 80. . ID 
Very rare in South Australia. 
Hab.—Living on rocks, Guichen Bay (Ziet2). 
Genus RicinuLa. d 
y 1. RK Adelaidensis, Crosse. JSF eo 
Ref.—Jour. de Conch., 1865, vol. XIIT., p. 50, t. 2, 4 il, 
Specimens of type and two varieties, 2. procerula and &. aurea, 
- from Port Adelaide and Gulf St. Vincent. 
The Malacological Section are of opinion that Trophon 
littorinoides, Ten.-Woods (Proc. Roy. Soc., Tasmania, 1875, p. 
135), and Zrophon propinqua, Ten.-Woods (Proc. Roy. Soc., 
