THE 



TAILLESS BATRACHIANS 



EUROPE. 



INTRODUCTION. 



PAGE 



I. Classification . . . . 2 



II. External Ohabactees . . ... 9 



III. iNTEfttTMBNT . . , . . 21 



IV. Dermal Secretion . . . 30 

 V. Skeleton . . . .... 33 



VI. Viscera . . . 4-9 



VII. Habits ... . . ... 57 



VIII. Voice . . . . . .61 



IX. Pairing and Oviposition . . 64 



X. Spermatozoa . ... 75 



XI. Eggs ... . . 78 



XII. Development and Metamorphosis ... 85 



XIII. Tadpoles . .... 99 



XIV. Hybrids 112 

 XV. Geographical Distribution 115 



