March, 1907.] THE VICTORIAN NATURALIST. 183 



The author briefly described the general disposition of the 

 Silurian strata to the north and east of Melbourne, and pointed 

 out the great difference between the fossil faunas of the Mel- 

 bournian and Yeringian divisions of this formation. To the 

 latter series belongs the interesting collection of fossils found at 

 Croydon, worked out by the author from material presented by 

 Mr. Thos. Warr to the National Museum. Several of the species, 

 and even genera, are new to Australia, and their chief points of 

 scientific value were then indicated by means of some sketches of 

 the principal fossils found. . 



Questions relating to the paper were asked by Messrs. F. G. A. 

 Barnard and A. D. Hardy, and replied to by the author. 



2. By Mr. C. Walter, entitled " A New Variety of a Victorian 

 Orchid," communicated by Mr. C. French, jun. 



The author described a form of the orchid Biuris punctata, 

 found by Mr. St. Eloy D'Alton at Mount Arapiles, near Natimuk, 

 which he considered of sufficient difference to warrant the varietal 

 name d'altoni being bestowed upon it. 



3. By Mr. F. G. A. Barnard, entitled " In the Valley of the 

 Upper Yarra." 



The author briefly described a visit recently paid to the valley 

 of the Upper Yarra, for some 35 miles above Warburton, 

 including the Yarra Falls. He stated that the vegetation was 

 not as luxuriant as he had expected, owing to the country being 

 entirely of Silurian or Ordovician formation, and that the rich 

 vegetation of the granite country is distant some two miles from 

 the Falls. A large-scale map of the district was exhibited in 

 illustration of his remarks. 



Mr. F. Chapman, A.L.S., made some inquiries as to the 

 geological features of the country dealt with, stating that Silurian 

 fossils had been recorded from Starvation Creek many years ago. 



EXHIBITS. 



By Mr. J. W, Audas. — Nine species of birds' eggs from 

 Wyalong district, N.S.W. 



By Mr. F. G. A Barnard. — Collection of Coleoptera, including 

 Stigmodera skusii, taken at Reefton, Upper Yarra, in illustration 

 of his paper. 



By F. Chapman, A.L.S. — Specimen of fossiliferous (Yeringian) 

 mudstone from Croydon, in illustration of his paper. 



By Mr. C. F. Cole. —Head of blacks' tomahawk unearthed at 

 Hawthorn at a depth of about two or three feet, being one of 

 several found, in addition to numerous pieces of sharpening 

 stones. Also, two peculiarly shaped fowls' eggs. 



By Mr. M. R. Cudmore. — Obsidian bomb found on Avoca 

 station, Wentworth, N.S.W. 



