134 NOTES AND EXHIBITS. 



Mr. G. F. Agnas referred the Eock Oyster of South Australia 

 when he wrote his paper on the * ' Marine Molluscan Fauna of 

 South Australia," in 1865, p. 643, part ii. 



It is found Mr. Angas says, common everywhere on rocks 

 between tide-marks from King George's Sound to New South 

 Wales ; excellent eating and of a delicious flavour. 



Two years after, when writing on the Marine Mollusca of Port 

 Jackson and the adjacent Coasts, he does not include this species 

 and refers our Bock Oyster in Port Jackson to Ostrea mordax of 

 Gould, I presume he had altered his opinion on the South 

 Australian species, and referred them both to Ostrea mordax, but 

 I include them both under one and the same species — Ostrea 

 glomerata, of Gould. 



NOTES AND EXHIBITS. 



Mr. Brazier exhibited the following specimens of Oi/praa for- 

 warded by Mr. J. F. Bailey of Melbourne — Cyprcea angustata, 

 hicolor, declivis, piperita, Comptoni, annulus, Australis, oryza ; also 

 the lower valve of a Corbula, named C. sulcata, by Mr, Bailey, 

 but really belonging to C. tunicata, a species of wide distribution ; 

 also a Glausilia, collected in the Botanic Gardens, Melbourne, 

 but evidently introduced with imported plants. 



Mr. Ramsay exhibited the Fishes referred to in his paper, and 

 specimens of Rhomloidichthys pavo, from the New Hebrides ; a 

 species of Clupea from Broken Bay ; large specimens of Galaxias 

 Coxii, from Mount Wilson ; and a new species of Virgularia 

 from Broken Bay ; also a skull of a native of the Dawson River, 

 showing a remarkable width of the dentary arches. 



Mr. H. Selkirk exhibited a stone axe from the Kurrajong. 



Dr. Cox exhibited a large block of wood which was taken out 

 of a shaft which was sunk at Penrith a few weeks since. The 



