NOTJiS AND KXHIBITS. 591 



1911, at Heathcote, N.S.W., and has attained a considerable 

 scientific interest in already published papers as the " unknown 

 larva X," wliich is the only form yet discovered for the Group 

 Idocordidina (Subdivision of the Cordulihue). One of tlie larvae 

 was first found in 1907, at Heathcote, but died in the act of 

 emerging three years later; so that it has taken five years to dis- 

 cover to what species it really belonged. No imagines have ever- 

 been seen or taken at Heathcote. Two other larvse are now 

 practically full-fed in Mr. Tillyard's aquarium, and may be 

 expected to emei'ge shortly. 



Dr. J. B. Cleland showed portion of a bull's hide, fi'om the 

 Hawkesbury River, showing small, scattered nodules due to the 

 distension of sebaceous glands with numei'ous specimens of the 

 acarid, Demodex Jolliciiloriim, var. bovis. These massed acarids 

 formed small yellowish caseous areas. Also leaves of a species of 

 Lomatia now exported in bundles to Germany, for decorative 

 purposes, when dried. 



Mr. A. G. Hamilton exhibited a rather striking life-size photo- 

 graph of one of the largest specimens of the green frog (Ilyla 

 cosrulea) taken near Sydney. 



Mr. A. A. Hamilton exhibited, and otfered notes on, three in- 

 teresting plants from the Nati(jnal Herbarium, Sydney — (1) 

 Medicayo hispida Gartn., var. inennis Urb., from the Domain, 

 Sydney(J. H. Camfield), the University grounds(W. M. Carne), 

 and other Sydney localities, not previously recorded from New 

 South Wales. — (2) Acacia obtusata Sieb., from Bell, N.S.W.(A. 

 A. Hamilton; September, 1912), a species well-establislied on the 

 Southern Tableland, but rare on the Blue Mountains. —{'S)Cvtula 

 r&ptans Bentli., from Ballina, N.S.W.(W. Bauerien; March, 1893), 

 recorded as from Manly southwards, and by Mr. F. M. Bailey 

 from Queensland. 



Mr. E. Cheel exhibited, and communicated notes on, a series of 

 botanical specimens comprising (1) Sweetbriar {Rosa rubiyinosa 

 L.) collected at Colo via Hill Top, badly infested with Rose-Rust 

 [Phrnymidium subcorticium (Sclirank) Winter], believed to be 



