PLATE I. 
Pig. 1. 
Fig. 2. 
Pig. 3. 
Pig. 4. 
Fig. 5. 
Pig. 6. 
Pig. 7. 
Pig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Fig. 12. 
Pig. 13. 
Fig. 14. 
Page. 
Cicada (J) Lowei, E. and O. ; a partially-preserved individual seen from above, 
X 3. Lower Mesozoic beds, Talbragar Eivcr ... ... ... ... ... 6 
Chironomus venerahilis, E. and O. ; a partially-preserved individual witb one 
wing remaining, x 3. Upper Tertiary, Vegetable Creek ... ... ... 7 
Epheniera CuUeni, E. and 0. A nympb seen partially from the side, showing 
eyes, rudimentary wing, legs, and abdominal segments, x 3. Upper Tertiary, 
Vegetable Creek ... ... ... ... ... ... ... ... 8 
Ditto ; showing bead, eyes, thorax, limbs, and abdomen, with imperfect caudal 
setae, seen from above, x 3. Upper Tertiary, Vegetable Creek. 
Ditto ; adult seen from above, with one of the fore-wings preserved, and 
portions of the caudal setae, x 3. Upper Tertiary Vegetable Creek. 
Ditto ; another nymph seen from above, with legs preserved, i 3. Upper 
Tertiary, Vegetable Creek. 
Ditto ; a nymph in which the abdominal segments are well preserved, x 3. 
Upper Tertiary, Vegetable Creek. 
Ditto ; a fairly perfect example in which the caudal setae appear preserved in 
their entirety, x 4. Upper Tertiary, Vegetable Creek. 
Ditto ; a rather distorted example, x 3. Upper Tertiary, Vegetable Creek. 
PalcBolycus prohlcmaticus, E. and O. ; a specimen in wUich the alimentary canal 
is preserved, but the bifid tail absent, x 2. Upper Tertiary, Vegetable 
Creek ... ... ... ... ... ... ... ... ... ... 11 
Ditto ; alimentary canal partially preserved, the antennae and bifid tail in 
position, X 2. Upper Tertiary, Vegetable Creek. 
Ditto ; an individual in which the antennae, alimentary canal, segmentation of 
the body, and tail are preserved, x 2. Upper Tertiary, Vegetable Creek. 
Ditto ; another in which the segmentation is faintly visible, x 3. Upper 
Tertiary, Vegetable Creek. 
Ditto ; a specimen in which the bifid tail has become twisted, x 2. Upper 
Tertiary, Vegetable Creek. 
