The South Australian Naturalist. 17 



are not changed into dry papers as above the specimens will 

 become mouldy and completely spoiled. Some very succulent 

 plants may need even longer drying and pressing. Note : The 

 prize collections are to become the property of the Section. 



Prizes for Orchids. Three prizes are offered for the best 

 collections of native flowers, grown under cultivation. First 

 prize, 10s. 6d (offered by Mr. Hackett) ; second prize, 7s. 6d. 

 (offered by Mr. Ising) ; third prize, 5s. (offered by Mr. Ham). 



"LONG-HORNED TREE LOCUSTS. ' 



By E. M. Brenn (Barrier Field Naturalists' Club). 



(Continued from last issue.) 

 A glance into the cage of the black tree locusts shows the 

 same greedy quarrelsomeness. Carrot cut into inch lengths is 

 placed on the bottom of the cage. It is best to always place the 

 carrot with one of its cut ends uppermost, as they prefer to sit 

 on top and gnaw the centre piece out, and they make the hole so 

 deep that sometimes half the thorax is out of sight. A large 

 black locust takes up her position on one of the pieces of carrot. 

 The brightly-coloured vegetable makes quite a pretty setting 

 for the black shiny head, thorax, and legs of the insect. She 

 began to gnaw energtically, and presently another emerged 

 from its hiding-place in search of food ; as soon as it began to 

 feed on a piece of carrot some inches distant she rushed at it. 

 It hastened away, and waited until she began to feed again, 

 when it made a second attempt to get a meal. Again she 

 rushed threateningly at it. This happened several times, and 

 the other was so persistent that she began to think it too much 

 worry to feed and keep it off at the same time, so she ceased 

 feeding and kept a sharp look-out. Under her vigilant gaze the 

 other felt that it would be hopeless to make any further attempt. 

 A little later, one not quite ready for the final moult sneaked 

 cautiously from under the bark and hastily began to feed. 

 With all his care he was detected and violently assaulted, rush- 

 ing madly up the side of the cage. He tried several times to 

 continue his meal, but without success. Wanting to be kind to 

 him, I opened the cage and put a piece of carrot behind the 

 bark where he had hidden. He was so pleased to get a meal 

 that he brought his long antennae (4|^ inches long) forward, 

 but they had the misfortune to fall near his tormentor on the 

 carrot, and she instantly rushed at them. After that the young 

 creature kept them discreetly over his back. He was eventually 



