SKELETON OP THE ANUJiOUS BATEACHI.VNS. 475 



E-anidse. 









Bana esculenta. 



18. 



24. 



6. 



Bana temporaria. 



12. 



22. 



4. 



Bana Whiteheadi. 



10. 



15. 



2. 



Oxyglossus Icevis. 



11. 



29. 



8. 



Bhacophorus leucomystax. 



16. 



26. 



10. 



Phyllohates trinitatis. 



5. 



8. 



0. 



Eugystomatidae. 









Microhyla ornata. 



6. 



9. 



2. 



Cystignathidae. 









Pseudis paradoxa. 



41. 



82. 



28. 



TelmatoMus marmoratiis. 



35. 



45. 



7. 



Chiroleptes platycepTialus. 



25. 



34. 



5. 



Galyptocephalus Gayi. 



41. 



54. 



9. 



Bufonidse. 









Bufo vulgaris. 



12. 



17. 



3. 



HylidjB. 









HyJa arhorea. 



12. 



22. 



8. 



Pelobatidse. 









Pelodytes punctatus. 



13. 



16. 



1. 



Pelobates fuscus. 



85. 



60. 



16. 



LeptohracJiium Hasselti. 



24. 



27. 



9. 



Discoglossidse. 









Discoglossus pictus. 



8. 



11. 



1. 



Alytes obstetric an s. 



20. 



35. 



4. 



Bombinator igneus. 



16. 



20. 



6. 



Dactylethridae. 









Xenopus Icevis. 



25. 



35. 



6. 



Pipidse. 









Pipa americana. 



10. 



12. 



4. 



Getstebal Pakt. 





The results of the investigation may be summarised in the 

 followiog words : — The two fundamental peculiarities of the 

 larval hyobranchial skeleton of Alytes above specified are found 

 in the tadpoles of Bombinator smd Discoglossus, but not in any of 

 the other genera examined. Tliis discovery is a lasting tribute to 

 the perspicacity and intuition of the late Prof. Cope, who first 

 brought together in taxonomic relationship the genera Alytes, 

 Discoglossus, and Bombinator, which had previously been relegated 



