NOTES AND EXHIBITS. 577 



NOTES AND EXHIBITS. 



Mr. Brazier exhibited specimens of Geratella fusca, Gray, from 

 N. S. Wales Coast, Hydractinia echinata, Fleming, from England, 

 Dehitella atrorubevs, Gray, from Algoa Bay, and Ghitina ericopsis. 

 Carter, from the Pacific. 



Mr. Brazier also exhibited, for Mr. Deane, specimens of Pecten 

 tegula, Wood, Vola fumata, Reeve, Patella tramoserica, Martyn, and 

 a piece of wood, all obtained while sinking the cylinders for the 

 railway bridge over the Parramatta River at Ryde, at a depth of 

 from 30 to 40 feet below the bed of the river. 



Mr. John Mitchell exhibited a very fine collection of Silurian 

 fossils from Bowning, near Yass, including a number of Mollusca, 

 and Trilobites (Phacops, Harpes, Bronteus. Acidasjris, Encrinurus, 

 CromuS} Splwexochus and Calymene) ; and specimens of Graptolites, 

 probably und escribed, and certainly the first recorded from 

 N.S.W., showing that the formations there which have hitherto 

 been regarded as Devonian are in reality Silurian, underlying the 

 strata in which the Devonian fossils, which had been supposed to 

 determine the age of the whole, were found. Mr. Mitchell also 

 exhibited fossil specimens of marsupial teeth and bones from the 

 caves of Cave Flat, Murrumbidgee, these being the first specimens 

 obtained from that locality. 



Mr. Macdonnell exhibited a sample of Diatomaceous earth from 

 Beechworth, Victoria, where it is found underlying a bed of peat, 

 in such quantities as to form an article of export. 



Mr. Smithnrst exhibited specimens of the Betel Nut, and of 

 implements and weapons made of ebony, or a quite similar timber, 

 brought from "New Guinea. 



Mr. Pedley exhibited two skulls of Australian aboriginals — male 

 and female — found in the neighbourhood of Sydney, and he 

 described the way in which the remains occur in old middens, and 

 the steps to be taken for collecting them from these places. 



