


110 
Dredged alive at 17 fathoms, St. Vincent Gulf and Back- 
stairs Passage, 4; at 18 fathoms, Investigator Straits, one ex- 
ample; at 45 fathoms, east of Neptune Islands, 1, and 4 
valves; at 17 and 22 fathoms, many valves; in Spencer Gulf, 
unrecorded depth, 1 alive, and 6 valves (Verco). 
Var.—Only one individual of a pale tint has the typical 
radial rays; most shells are of a pinkish chestnut, especially 
at the umbos, disposed in dark and light concentric bands; 
some are deep reddish-brown at the umbos and along the 
post-dorsal and ventral margins, and have no concentric 
bands; others are white. 


