MARINE MOLLUSCA COMMON TO AUSTRALIA 
AND SOUTH AFRICA. 
By Joun SHIRLEY, D.Sc., F.M.S. 
( Read before the Royal Society of Queensland, 28th July, 1919). 
In a former paper* the extremely wide range of marine 
shells found on the Queensland coasts, and the large per- 
-centage of species common to such distant places as Queens- 
land and the Philippine Islands have been dealt with at 
length. Melville and Standen in their ** Shells from Lifu ” 
refer constantly to similarity of species in the molluscan 
faunas of Mauritius and the Loyalty Islands, places separated 
by 3,000 miles of sea. They notice particularly the presence 
of a Galapagos shell, Cerithiwm zebrum Kiener, at Lifu, 
also reported by the writer from Murray Island in Torres 
Strait. Queensland species are found inhabiting the Red 
Sea and Persian Gulf, and others range as far as the coasts 
of China and Japan. Keeping their extraordinarily wide 
distribution in view, especially in the Indo-Pacific regions, 
it is curious to meet with statements like the following ,— 
tT The species,” referring to Ziziphinus bicingulatus 
Lamarck, “is South African according to the British Museum 
collection, and the Queensland locality is necessarily false.’ 
Again, the same writer in referring to Cymatium doliarium 
*Shirley, Proc. Roy. Soc. Queens., XXV, 1914, pp. 5-12. 
j Hedley, Studies of Australian Mollusca, Part XI, 1913 p., 279. 
