The South Australian Naturalist. 



Excursion, September 3, 1921.— A party proceeded to 

 Blackwood to study pond life. The leader, Mr. Edquist, met 

 the party, who proceeded to the ponds near the P.O. Some 

 good dredging was done, and as each member was provided 

 with a receptacle specimens were secured by each member. The 

 specimens included dytiscus and gyrinus (in both larval and 

 adult stages), notonecta (the back-swimmer), the red Vv'ater 

 motor, and larvae of various insects, including the mosquito, 

 which were all fully dealt with by the leader. 



Excursion, September 17, 1921.— In the absence of Mr. Lea, 

 Mr. E. H. Ising took charge of a small party of members who 

 explored the sandhills at Henley Beach. The effective protec- 

 tion of the sandhills by various plants, more particularly by 

 spinifex hirsutus, was particularly noted. The party secured 

 a good many interesting plants in flower, including Austral 

 Trefoil (Lotus australis). Variable senecio (Senecio iautus). 

 Bower spinach (Tetragonia implexicoma), Coast Beard Heath 

 (Leucopogon Richei). 



Excursion, October 1, 1921. — A party, under the leadership 

 of Mr, W. H. Selway, travelled to Kangarilla by charabanc. 

 The glorious panoramic views of hills, plains, and sea obtained 

 from various points of the road through the ranges were greatly 

 admired. A great many plants were taken. Two not often 

 seen by members were Conospermum patens and Adenanthos 

 terminalis. Two varieties of Boronia coerulescens, one blue, 

 the other white, were very much admired. Zieria veronicea, 

 with beautiful pink flowers, would make a fine addition to a 

 garden. The scrub was gay with the dense spikes of Pultenaea 

 densifolia, with Tetratheca, Hibbertias, Caesia, and Helichry- 

 sum. A pleasant time was spent in examining the unusual flora 

 of the sandy soil of Kangarilla. 



Excursion to National Park, Belair, October 22, 1921. — A 



botanical excursion was conducted in the National Park, Belair, 

 by Mr. E. H. Ising, who dealt more particularly with the 

 orchids that were found during the afternoon. About a dozen 

 different species were taken, and the characteristics of each 

 were referred to by the leader. The Caladenias were most 

 numerous, the long tentacular labellum of C. dilatata being 

 greatly admired. A white variety of this species was found, 

 the usual colour being purple, white and green. The "slender- 

 lipped" spider, C. leptoehila, was found, and its peculiar up- 

 right petals noted. One which is often called "rabbits' ears,'" 

 C. Menziesii, was also taken. Several of the Ixia-like orchids 

 were seen, the largest, Thelya^itra grajicliflora, having a spike of 



