1865.] MOLLUSCAN FAUNA OF SOUTH AUSTRALIA. 171 
Fam. CANCELLARIID2. 
93. CANCELLARIA UNDULATA. 
Cancellaria undulata, Sow. Proc. Zool. Soc. 1848, p. 136. 
Station. Deep water. ; 
Hab. Port Elliot, Encounter Bay, 
This fine species is very closely allied to O. granosa, Sow., from 
New South Wales. It differs from the latter, however, in haying a 
smaller spire and finer striz. 
94. CANCELLARIA SPIRATA. 
Cancellaria spirata, Lam. Anim. sans Vert.; Sow. Thes. Conch. 
(Cancellaria), pl. 93. f. 22. 
Cancellaria excavata, Sow. 
Station. Deep water. 
Hab. Encounter Bay. 
This beautiful species I believe to be the true C. spirata of La- 
marck. Mr. Sowerby’s C. excavata (from South Australia also) I 
regard as synonymous. The specimens:of the latter in Mr. Cuming’s 
collection appear to be only dead and beach-worn examples of C. 
spirata. 
Fam. CeritHiip2#. 
95. BIrTTIUM GRANARIUM. 
Cerithium granarium, Kiener, Icon. Coq. Viv. p. 72, pl. 19. f. 3. 
Station. Under stones, low water. 
Hab. St. Vincent’s Gulf. 
This species is abundant in Port Jackson, New South Wales. 
95a. BirT1uM TURRITELLA. 
Cerithium turritella, Quoy, Voy. Astrol. iii. p. 131, pl. 55. f. 8. 
Station. Low water, on the sands. 
Hab, Yorke’s Peninsula, and head of Spencer’s Gulf. 
96. *BirrruM LAWLEYANUM. 
Bittium lawleyanum, Crosse, Journ. Conch. 1863, p.87, pl. 1. f. 4. 
Station. Unknown. 
Hab. Head of Spencer’s Gulf. 
A very closely allied species, which may prove to be only a variety 
of this, occurs in Port Phillip Harbour: I have found specimens of 
it on the beach near Melbourne. This shell has more the appear- 
ance of a little Turriteila than a Bittium. 
97. *POTAMIDES MONACHUS. 
Cerithium monachus, Crosse et Fisch. Journ. de Conch. 1864, 
p- 347, pl. 3. f. 17, 18. 
Station. 3 to 6 fathoms, on sandy mud. 
Hab. Yorke’s Peninsula; Adelaide Creek. 
On the beach at St. Kilda, near Melbourne, I met with numerous 
dead specimens, This aberrant form of Cerithiide seems to ap- 
