NOTES AND EXHIBITS. 1123 



spores, but the oospheres in various stages of development, and 

 also the form known as Sphaerosira volvox, Ehr. This has usually 

 been stated to be a peculiar stage of V. globator. After many 

 years of observation, both in this colony and in England, my 

 opinion is that it has nothing to do with that species, but is really 

 the male plant of V. minor. In support of this view I may 

 mention that so far I have failed to find any trace of antheridia, 

 or any description of such organs, except those produced by 

 Sphaerosira, and further the last-named is always associated with 

 the plants containing oospheres of V. minor, and never with the 

 true V. globator." 



Mr. Whitelegge also exhibited specimens of Lemna oligorrhiza in 

 flower. 



Mr. Masters exhibited a large collection of Coleoptera lately 

 made by Mr. Froggatt, at Port Douglas, numbering 500 species, 

 many of them new. He also exhibited the nest of Dicceum hirun- 

 dinaceum from the same locality. 



Mr. Eatte exhibited specimens of crystallised and dendritic 

 Gold from the casing of quartz leaders in mica schist, at Galaarino, 

 New Caledonia, shewing a linear arrangement of sets of imper- 

 fect octahedra ; and a small rhombic dodecahedron from Ballaarat. 

 Also, a polished specimen of diabase porphyry, from Red Hill, 

 between Ironbarks and Wellington, the polishing imperfectly 

 effected owing to the brittleness of the augite crystals. 



Mr. Macleay exhibited several large specimens of rock composed 

 entirely of fossil leaves, received from Mr. Anderson, of Newstead 

 near Inverel], and read the following note on them from Mr. 

 "Wilkinson the Government Geologist : — " These fossils are of 

 Eocene Tertiary age, and with them fresh-water shells of the 

 genus Unio, have been found. Several of the shells were exhibited 

 by Profesor Stephens at a previous meeting of the Society." 



