GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 183 



FIG. 6. Callianassa abbreviata, paratype a, left manus, outer view, X 3. 



7. Heteractaea lunata (Milne Edwards and Lucas), right chela, Cat. No. 



324265, outer view, X 3i. 



8. Upper view of same, X 3. 



9. Heteractaea lunata, right chela of Recent specimen, Cat. No. 2146, X 3J. 



10. Callianassa vaughani Rathbun, paratype b, portion of propodus of left 



cheliped, outer view, X 2. 



11. Callianassa vaughani, paratype a, left manus, outer view, X 2. 



12. Inner view of same, X 2. 



13. Callianassa raughani, holotype. right chela, outer view, X 2. 



PLATE 64. 



FIG. 1. Aren-aevs, species, Cat. No. 324252, left movable finger, outer view, 

 X 3*. 



2. Cardisoma guanliumi Latreille, propodal finger of left cheliped, outer 



view, X 3. 



3. Lower view of same, X 3. 



4. Upper view of same, X 3. 



5. Brachyrhyncha, indeterminable. Cat. No. 324258, merus of ambulatory 



leg, X 3. 



6. Brachyrhyncha, indeterminable, Cat. No. 324294, right manus, X 3. 



7. Uca macrodactylus (Milne Edwards and Lucas), Cat. No. 324251, dacty- 



lus of ambulatory leg, X 3*. 



10. Callianassa f, species, Cat. No. 324280, merus of right cheliped (?), 

 view, X 3i. 



9. Upper view of same, X 3J. 



10. CaUianassaf, species, Cat. No. 324280, merus of right cheliped (?), 



X 3i. 



11. Euphylax fortis Rathbun, holotype, right side, showing cross sections of 



merus of cheliped and of two legs, X 1$. 



12. Front view of same, showing remains of fingers, X 1-J. 



13. Ventral view of samp, X H 



PLATE 65. 



FIG. 1. Callincctes, species, Cat. No. 324255, mamis and carpus of left cheliped, 

 outer view, X ]. 



2. Upper view of same, X 1*. 



3. Euphylax callinectias Rathbun, holotype, dorsal view, X 1. 



4. Posterior view of same, X 1. 



5. Ventral view of same, X 1J. 



6. Anterior view of same, X 1. 



7. Callincctes, species, Cat. No. 324268, distal third, tip missing, of immov- 



able finger, X 3. 



' PLATE 66. 



FIG. 1. Callincctes declivis Rathbun, holotype, propodus of left cheliped, upper 

 view, X 1$. 



2. Inner view of same, X 1J. 



3. Outer view of same, X 1^. 



4. Hepatns chilicnsis Milne Edwards, Cat. No. 324235, dactylus of right 



chela, inner view, X 3. 



5. Callinectcs rciicitlatits Rathbun, holotype, propodus of right cheliped, 



upper view, X 1J. 



