GEOLOGY AND PALEONTOLOGY OP THE CANAL ZONE. 183 



Fig. 6. Callianassa abbreviata, paratype a, left maims, outer view, X 3. 



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

 324265, outer view, X 3*. 



5. Upper view of same, X 3h 



9. Heteractaea lunata, right chela of Recent specimen, Cat. No. 214G, X 3£. 



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



cheliped, outer view, X 2. 



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



12. Inner view of same, X 2. 



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



Plate 64. 



Fig. 1. Arenaeus, species, Cat. No. 324252, left movable finger, outer view, 

 X 3*. 



2. Carclisoma guanhumi 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 rnacrodactylus (Milne Edwards and Lucas), Cat. No. 324251, dacty- 



lus of ambulatory leg, X 34. 

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

 view, X 3*. 



9. Upper view of same, X 'Si. 



10. Callianassa?, species, Cat. No. 3242S0, merus of right cheliped (?), 



X 3*. 



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



merus of cheliped and of two legs, X li. 



12. Front view of same, showing remains of fingers. X li. 



13. Ventral view of same, X 1 4 



Plate 65. 



Fig. 1. Callinectes, species, Cat. No. 324255, manus and carpus of left cheliped, 

 outer view, X 1$. 



2. Upper view of same, X 1%. 



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



4. Posterior view of same, X li. 



5. Ventral view of same, X li. 



6. Anterior view of same, X 1J. 



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



able finger, X 3. 



Plate 66. 



Fig. 1. Callinectes declivis Rathbun, holotype, propodus of left cheliped, upper 

 view, X 1-1. 



2. Inner view of same, X 1^. 



3. Outer view of same, X 1^. 



4. Hepaius chiliensis Milne Edwards, Cat. No. 324235, dactylus of right 



chela, inner view, X 3*. 



5. Callinectes reticulatus Rathbun. holotype, propodus of right cheliped, 



upper view, X 1*. 



