TADPOLES. 



109 



the mouth or the distance between the 

 nostrils ; usually a black tubercle on the 

 upper mandible . . . B. agilis. 



With regard to size, the tadpoles rank as follows : 



1. 



o 



3. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

 16. 

 17. 

 18. 

 19. 



Pel abates fuseus 



,, cult rip es 

 Pana esculent a . 

 Alytes obstetricans 



,, cisternasii 

 Pelodytes punctatus, 

 Bana agilis . 

 Bombinator igneus 

 Hi/la arborea 

 Bana ib erica . 



,, grseca . 



,, temporar i a 

 Bombinator pacing pus 

 Biifo viridis . 

 Bana latastii 

 ,, arcalis 

 Discoglossus pictus 

 Bufo vulgaris 

 calamita, 



5J 



Maximum length 

 on record. 

 Millimetres. 



175 

 120 

 111 



90 



69 



65 



59 



50 



49 



49 



48 



46 



45 



44 



44 



43 



33 



32 



30 



But if we compare the maximum length of the tad- 

 pole with the maximum length of the adult, we 



obtain the following order 



1. 



2. 

 3. 

 4. 



5. 

 6. 



Pelobates fuseus . 

 Alytes obstetricans 

 ,, cisternasii . 

 Pelobates cultripes 

 Pelodytes punctatus 

 Bombinator iqneus 



Maximum 

 length of adult from 

 snout to vent. 

 Millimetres. 



80 

 54 

 40 

 88 

 45 

 50 



