DESCRIPTION OF PLATE XXIII. 
All the figures refer to Phreatoicus australis. 
Fig. 1. Side view of the animal (<J ), x 6. 
,, 2. Upper antenna, x 19. 
„ 3. Lower antenna, x 19. 
„ 4. Upper lip, x 19. 
„ 5. Left mandible (seen from in front, i.e., from above, and partly 
from within) x 45. 
„ 5 a. Extremity of left mandible, showing the cutting teeth, x 45. 
„ 6. Lower lip, x 19. 
„ 7. First maxilla, x 45. 
[Reproduced by G. H. Barrow of the Australian Museum, from original 
drawings by the author, Chas. Chilton, and printed by Heliotype.] 
