FRESHWATER AND LAND CRAYFISHES OF AUSTRALIA 
57 
Explanation of Plates. 
Plate I. 
Fig. 1. Podobranch of Euastacus serratus (Shaw) ; la, transverse section of 
same. 
Fig. 2. Podobranch of Astacopsis gouldi sp. nov. ; 2a. transverse section of 
same. 
Fig. 3. Podobranch of Cherax destructor sp. nov. ; 3a transverse section of 
same. 
Fig. 4. Sternal keel of Cherax atbidus sp. nov. 
Fig. 5. Sternal keel of C. destructor sp. nov. 
Fig. 6. Sternal keel of C. punctatus sp. nov. 
Fig. 7. Sternal keel of Astacopsis tricornis sp. nov. 
Fig. 8. Sternal keel of Geochar ax gracilis sp. nov. 
Fig. 9. Sternal keel of Engaeus fossor Erichson. 
Fig. 10. Sternal keel of E. villosus sp. nov. 
Fig. 11. Sternal keel of Pseudengaeus strictifrons sp. nov. 
Plate II. 
Plead ; a, interantennal spine and upper lip ; b, great chela, 
male ; c, great chela, female. 
Fig. 12. Euastacus serratus (Shaw). 
Fig. 13. E. yarraensis (McCoy). 
Fig. 14. E. serratus s.sp. hirsutus (McCulloch). 
Plate III. 
Fig. 15. E. nobilis (Dana). 
Fig. 16. E. nobilis s.sp. kershawi (Smith). 
Fig. 17. E. fleckeri (Watson). 
Plate IV. 
Fig. 18. Cherax tenuimanus (Smith). 
Fig. 19. C. quadricarinatus (von Martens). 
Fig. 20c. Gynandromorph of C. quinquecarinatus (Gray). 
Plate V. 
Fig. 20. C. quinquecarinatus (Gray). > 
Fig. 21. C. bicarinatus (Gray), drawn from a specimen from Gray’s type 
material. . ; 
Fig. 22. C. bicarinatus (Gray), drawn from a specimen from Smiths type 
material. 
Fig. 23. C. destructor sp. nov. 
Plate VI. 
Fig. 24. C. albidus sp. nov. 
Fig. 25. C. punctatus sp. nov. 
Fig. 26. Geocharax gracilis sp. nov. 
Plate VII. 
Fig. 27. Astacopsis franklinii (Gray). 
Fig. 28. A. gouldi sp. nov. 
Fig. 29. A. tricornis sp. nov. 
Fig. 30. P arastac aides tasmanicus (Erichson). 
