147 



Both sexes of the matured beetles vary in length, but 

 the male may be readily distinguished from the female by its 

 longer and stouter antennae and legs, especially the front 

 tibiae and tarsi, pronotum with patches of coarse punctures 

 alternated with more finely punctured and subopaque patches 

 (instead of with coarse punctures throughout as on the 

 female), and abdomen wider and subopaque, except that the 

 fifth segment and tips of the others are shining ; whereas on 

 the female the abdomen is polished throughout. 



EXPLANATION OF PLATES. (2) 



Plate XI. 



Male of Lord Howe Island Pliasma, Karabidion australe, 

 Montr. 



Plate XII. 

 Female of Pliasma. 



Plate XIII. 



Figs. 1-8. Immature specimens of Pbasma. 



,, 5. Larva with renewed right hind leg. 



,, 6 and 7. ,, ,, ,, left front leg. 



,, 8. ,, ,, ,, right middle leg. 



„ 9- Eggs. 



Plate XIV. 

 Two mature males with right hind legs renewed. 



Plate XV. 

 Sections of tree inhabited by Phasmas (greatly reduced). 



Plate XVI. 

 Longicorn Beetles, Afjrianomc spinicollis, W. S. Macl. 



Plate XVII. 



Sections of orange tree damaged by Longicornes (greatly 

 reduced). 



(2) Photographs by Mr. Henry Hale, of the South Australian 

 Museum. 



