1865.] MOLLUSCAN FAUNA OF SOUTH AUSTRALIA. 173 
105. RisELLA AURATA, var. 
Trochus auratus, Quoy, Voy. del’ Astrol. iii. p. 276, pl. 62. f. 19. 
Risella lutea, H. & A. Adams, Gen. Moll. pl. 33. f. 5. 
Station. On stones between tide-marks. 
Hab. Holdfast Bay ; Aldinga Bay. Common. 
106. RisELLA PLANA. 
Trochus planus, Quoy, Voy. de |’Astrol. p. 274, pl. 62. f. 13, 14. 
Station. On stones just below high-water mark. 
Hab. All parts of the coast. 
This species has a wide range. It is found abundantly on the 
coast of New South Wales. 
107. *RisELLA BRUNI. 
Risella bruni, Crosse, Journ. de Conch. 1864, p. 239, pl. 11. f. 3. 
Station. Adhering to small flat fragments of rock and coral unco- 
vered by the tide. 
Hab. Head of Spencer’s Gulf. 
Fam. PLANAXID#. 
“The only species of this family hitherto met with in South Aus- 
tralia belong to Mr. A. Adams’s genera Alaba and Diala, which are 
nearly related to Litiopa. 
108. *ALABA PULCHRA. 
Alabe pulchra, A. Adams, Ann. Nat. Hist. Oct. 1862, p. 296. 
Station. Amongst seaweed and Zostera, in 2 fathoms’ water. 
Hab. Port Adelaide, amongst the seaweed brought up in shrimp- 
ing-nets. 
109. ALABA MONILE. 
Alaba monile, A. Adams, Ann. Nat. Hist. Oct. 1862, p. 296. 
Station. Unknown. 
Hab. Port Lincoln, in shell-sand. 
110. *ALABA PAGODULA. 
Alaba pagodula, A. Adams, Ann. Nat. Hist. Oct. 1862, p. 297. 
Station. Unknown. 
Hab. St. Vincent’s Gulf, in shell-sand. 
111. *DIALA LAUTA. 
Diala lauta, A. Adams, Ann. Nat. Hist. Oct. 1862, p. 298. 
Station. Amongst seaweed, in 2 fathoms. 
Hab. St. Vincent’s Gulf. Often in shell-sand at the head of 
Spencer’s Gulf, along with Truncatella and Bittium in vast numbers. 
112. DraLa sUTURALIS. 
Diala suturalis, A. Adams, Ann. Nat. Hist. Oct. 1862, p, 298. 
Station. Unknown. 
Hab. St. Vincent’s Gulf, in shell-sand. 
