832 NOTES AND EXHIBITS. 



aid in destroying this destructive pest in Ceylon, Italy and South 

 Africa, but it again has many parasites which devour its larv^se, 

 among them several members of parasitic wasps ( Tetrastichus). 

 He also showed some small flies and a Psocid among the specimens 

 collected from the contents of the package. 



Mr. Fred. Turner exhibited and offered some observations 

 upon the following plants: — (1) The "Yellow-rattle" of Europe 

 {Rhinanthus crista-galli, Linn.), an introduced plant more or less 

 parasitic on the roots of grass and other herbage, which has 

 recently appeared in certain pastures bordering the Hawkesbury 

 River; (2) two European species of Medicago (J/, tribuloides, 

 Willd., and M. 7ninima, Willd.) from the neighbourhood of 

 Warren, where they had not previously been observed; and (3) 

 the European Papaver argemone, Linn., and Raniuiculus 'inuri- 

 catus, Linn., from Tulcumbah, Liverpool Plains, not seen there 

 before. The seeds of the four last-named plants are supposed to 

 have been introduced with imported stock-food. 



Mr. Jensen showed under the microscope (1) sections of a 

 specimen of coal from Newcastle, N.S.W., given to the exhibitor 

 by Mr. S. R. Mort, the sections proving the matrix to consist 

 almost entirely of sporangia and spores; and (2) slides of Fora- 

 minifera and glauconite granules from the Pakeozoic Formation 

 of Jutland, Denmark. 



Mr. Andrews exhibited a large model of an ideal section of 

 the country between Orange and Sydney, showing the character- 

 istic physiographical features, in illustration of his paper. 



Mr. Fletcher showed a series of fresh flowering specimens of 

 the l)eautiful plant Epacris impressa, Labill., illustrating the 

 well-known variability of this species in respect of the colour of 

 the flowers (from pure white through various shades of pink to 

 red), and in the length of the flowers. The specimens had been 

 most kindly forwarded by post from Pambula, N.S.W., b}' Mrs. 

 Forde. As far as known, the Pigeon House Mountain seems to 

 be about the northern limit of the species. 



