347 



showed samples of the coral which was found during the 

 preparation for the breakwater at Glenelg, and was by far 

 the largest mass of coral hitherto discovered in our waters. 

 He referred the corallum to Flesiastriea urvillei. "Descrip- 

 tion of an Old Lake Area in Pekina Creek, and its Re- 

 lation to Recent Geological Changes," by W. Howchin, 

 F.G.S. Mr. Howchin exhibited samples of the lacustrine 

 deposits from Pekina Creek, including bands of fresh-water 

 limestone entirely composed of the matted stems of Chara. 



Ordinary Meeting, August 3, 1909. 



The President (J. C. Verco, M.D., F.R.C.S.) in the 

 chair. 



Mr. Selway, referring to the Minutes, called the atten- 

 tion of the meeting to a report in the daily Press of coral 

 having been found at another part of the Gulf than that 

 mentioned in Mr. Howchin's paper. Mr. Howchin stated 

 that probably the rock there alhided to was not coral, but a 

 mass of serpula, and showed from a letter received from Cap- 

 tain Weir, who discovered the rock, that none of it had been 

 brought to the surface. Its position is opposite Port Parham, 

 about five miles out. 



Papers. — "Descriptions of Micrantheum demissum, P. 

 von M., and of New Species of Solanum Pultencea and 

 (Tre.riJIeo," by J. McC. Black. "Note on Cordylo'pJiora and 

 its Occurrence in South Australia," by W. B. Poole: — "It be- 

 longed to the Order Bydromcdnm , Family Clavidw, Allman, 

 Allman in his 'Monograph on the Hydrozoa' (Ray Society) 

 established a new genus for this hydroid, as its form of life 

 was exceptional, being found in fresh-water. Description. — 

 Stem well developed, branching, rooted by a filiform stolon; 

 the whole of the coenos are invested by a chitinous polypary ; 

 polypites fusiform, developed from the extremities of the 

 branches, with scattered filiform tentacula ; reproduction 

 sporosacs, borne on the stem, never on the polypites (Huicks). 

 Cordylophora was first found in the Grand Canal, Dublin, 

 in 1844 : since then in the London Docks, several localities 

 in Europe, and at Newport Harbour, U.S.A. Descriptions 

 of these from the above localities have been published. All 

 the descriptions harmonize and agree in the main with Cordy- 

 lopliiii<t lacimtrh of Allman. In Australia, Lendenfeld 

 (Trans. Linn. Soc, of New South Wales, 1884) says repre- 

 sentatives of this group are known to occur in Australia. In 

 1885 T. Whitelegge (Trans. Linn. Soc, of New South Wales, 

 1885) exhibited specimens from the Parramatta River, and 

 Von Lendenfeld thought it might be a new species. I have 

 heard that years ago a specimen was taken from a pond in 



