416 NOTES AND EXHIBITS. 



1914), exliibiting leaf-variation. The examples shown range 

 from straight to semicircinate, and from linear to lanceolate; 

 their apices are obtuse, acute to acuminate, and they are either 

 abruptly or gradually narrowed into the petiole at the base. 

 Some measurements are, 11 x | inch, 8i x J, 6 x |^, 6x1, 3 x ^^, 

 3^ X h- A specimen was also exhibited, showing a juvenile leaf 

 between phyllodes, occurring at a height of about 6 feet, All 

 the examples were taken from a small colony of plants, 8 10 feet 

 high, growing on a sandstone-ridge. 



Mr. E. Cheel exhibited fresh specimens of the " Common 

 Garden Gerainmm^' (Pelargonium zonale L'Her.), collected at 

 Beecroft by Mr. W. M. Carne; and at Gladesville, by Rev. W. 

 W. Watts, badly attacked with a Rust, Uromyces sp.(1). Speci- 

 mens of a "Wild Geranium" (G^e?'am'wm dissectum L.), collected 

 at Clifton Gardens by the exhibitor in June, 1911, were likewise 

 shown, which were also badly afiected, and it is quite probable 

 that the cultivated plants may have been infected with the disease 

 from some such source as this. - Specimens of Acacia decurrens 

 Willd., var. 2^cLuciglandulosa F.v.M., collected at Pymble, were 

 also shown; these were badly affected with a Rust which seems to 

 belong to Uromyces. — Some specially interesting forms of the 

 common "Couch Grass" {Cynodon dactylon Pers.) were exhibited 

 from Centennial Park, having eleven spikes in the inflorescence 

 instead of the usual four to five; and also specimens from the 

 Bogan River, collected by Mr. W. F. Blakely, in October, 1912, 

 with two perfect flowers in several of the spikelets. Previous 

 records of these peculiar abnormal forms will be found in the 

 Agricultural Gazette of N, S. Wales, iv., p. 312; and in these 

 Proceedings, 1908, p.290. 



Mr. Tillyard exhibited the larvae of two rare Zygopterid 

 Dragonflies, the Calopterygid Diphlebia lestdides Selys, and the 

 Agrionid Neosticta canescens Tillyard. The larvae are charac- 

 terised by the possession of large, swollen, caudal gills of the 

 saccoid type— a very rare archaic type of gill. The gill of 

 Diphlebia is a simple saccus, that of Neosticta is a constricted 

 saccus of peculiar form, and probably developed from an origin- 

 ally two-jointed anal appendage. 



[Printed off, Uth September, 1915.] 



