Fig. 30. — Metamorphosis of Pann teivporaria. i, tadpole just hatched; 2, 3, successively 

 older tadpoles seen trom one side; 4. a slightly older tadpole seen fiom the aorsal side ; 5 

 a still older specimen from below; 6, tadpole with the gills covered, leaving only a srnail 

 openmg on the left side; 7, first indication of hind legs; 8 and 10, successively older stao-es- 

 9, specimen with the ventral bodv wall removed, showing the coiled intestine and gills •''11' 

 both pairs of legs free; 12, 13, 14. successive staees in the resorption of the tail- 15 adult 

 frog. ^ anus; //£, hmd leg; A', gills; AZ, gill opening; M, mouth; N, nasal opening: 

 O, eye; SS, ventral sucker. (From Weysse's "Synoptic Text Book of Zoology" after 

 Leuckart and Nitsche.) 



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