NOTES AND EXHIBITS. 591 



Trichodes crassicauda Bellingham, from the bladder of M. rattus 

 Linn., M. alexandrinus Geofifr., and M. musculus Linn. (Sydney), 

 this parasite being apparently unrecorded from these three hosts 

 in other parts of the world, though it is fairly common in the 

 bladder of M. decumanus in this State. 



Mr. Baker exhibited (1) dyed specimens of South Austra- 

 lian Sea Balls, compacted fibres of Posidonia austrcdis. (2)Timber 

 of Eucalyptus globulus, showing unusually wide annual rings, 

 from Barren Jack, N.S.W. And (3) branchlets of a " Grey 

 Gum ^\Eiicalyptus punctata) with variegated leaves, from Point 

 Clare near Gosford, together with sections of such leaves shown 

 under the microscope, The exhibit formed the most remarkable 

 instance of etiolation in a Eucalypt that he had ever seen. The 

 oil-glands of the variegated leaves appeared to be quite normal. 



Mr. Cheel exhibited specimens of the Hygrometric Club-moss 

 {Selaginella lepidophylki) which is being offered for sale in Sydney 

 just now, together with a locally published circular extolling its 

 virtues, real or imaginary. He also showed examples of two 

 Australian lichens, Farmeliopsis semimridis Nyl., and Heterodea 

 Muelleri N}''!., which possess the character of inrolling during 

 dry weather, and unfolding in damp or rain}'- periods, in a very 

 marked degree, and which displayed it more rapidly even than 

 the Syrian " Rose of Jericho "{Anastatica Hierochuntica), or the 

 Mexican Selaginella lepidophylla Spring. He showed also fresh 

 specimens of BB.i'\ey(Hordeum vulgare Linn.) raised from seed 

 obtained at the last Agricultural Show, affected with Powdery 

 Mildew (Fry siphe graminis DC, s}^!. Erysiphe graminis Link), 

 and a Smut [Ustila go nuda (J en.) Js.e\\. & Sw.], as well as the 

 uredospore stage of a Rust{Fuccinuc sp.). Also Potato-leaves 

 affected with Early Blight of 'PotFitoes{JIacrosporium sola)ii Ell. 

 & Mart.) and others smitten with the Late Blight or so-called 

 Irish Blight (Phytophthora iri/estans De Bary), obtained re- 

 spectively from Penshurst and Kogarah. 



Dr. Greig-Smith exhibited cultures of two races of a bacterium 

 distantly related to the colon bacillus. These were identical in 



