18S7.] IN THE LARYNX OF THE ANUROUS AMPHIBIA. 49/ 



Ceratop/nys americana (fig. 4, p. 49.5) both epiglottis and epilaryngeal 

 folds were found to be well developed ; but tbough conspicuous, they 

 remaui co„parativelv insignificant beside those of an adult male of 



Fig. 6. 



The larynx and floor of the mouth in Chiroleptes audrahs, adidt tS . 



Fig. 7. 



The larynx in the same, seen en face. Both figs, magnified twice. 

 Eeferences as in previous figures, s.g', orifice of gular sac. 



Chiroleptes australis, that being one of the genera possessed of the 

 well-known gular sac {s.g, s.g , figs. 6 and 9). This specimen presents 

 the niaxnnum development observed, and I have accordingly figured 



