396 ■BYXJDM. 



89. Hyla guatemalensis. 



Plectrohyla guatemalensis, Brocchi, Bull. Soc. Philom. (7) i. p. 92. 

 Cauphias guatemalensis, Brocchi, ibid. p. 129. 



Tongue round, entire, free behind. Vomerine teeth in two small 

 groups between the choanse. Snout rounded ; canthus rostraUs 

 distinct ; loreal region very high, concave ; tympanum hidden. A 

 rudiment of web between the three outer fingers ; a much developed, 

 claw-like rudiment of pollex ; toes entirely webbed ; disks well 

 developed. Sides with glandular folds ; beneath granulate ; a fold 

 across the chest. Grey above, with rounded markings on the back ; 

 limbs marbled with green ; yellowish white beneath. From snout 

 to vent 69 millim. 



Guatemala. 



90. Hyla crassa. 



Oauphias crassus, Brocchi, Bull. Soc. Philom. (7) i. p. 130. 



Tongue subcircular, nicked and slightly free behind. Vomerine 

 teeth in two groups between the choanse. Head short and thick ; 

 snout rounded ; canthus rostralis short, rounded ; loreal region 

 much elevated, a little concave ; tympanum hidden. Fingers free ; 

 no projecting rudiment of pollex ; toes entirely webbed. Skih of 

 upper surfaces shagreened ; lower surfaces gra,nulate ; a fold from 

 the eye to the shoulder ; a fold across the chest. Grey above ; 

 flanks and limbs marbled. Male with a vocal sac. From snout to 

 vent 66 millim. 



Mexico. 



91. Hyla plicata. 



Hyla plicata, Brocchi, Bull. Soc. Philom. (7) i. p. 126. 



Tongue oval, nicked and free behind. Vomerine teeth on a level 

 with the front edge of the choanse. Head much depressed, broader 

 than long ; snout rounded ; canthus rostralis angular ; eyes very 

 large ; tympanum distinct, one third the diameter of the eye. 

 Fingers free, a rudiment of web between the first and second (!) ; 

 toes half webbed ; disks small, not half the diameter of the tym- 

 panum. Skin smooth above, granulate beneath ; a fold from the 

 eye along the side ; a strong fold across the chest. Green above, 

 back and limbs spotted. From snout to vent 44 millim. 



Mexico. 



92. Hyla spinosa. 



Hyla spinosa, Steindachn. Verh. zool.-bot. Ges. Wien, 1864, p. 239, 

 pi. 9. f. 1, and Novara, Amph. p. 62. 



Tongue subcircular, slightly emarginate behind, adherent. Vome- 

 rine teeth between the choante, in two small groups slightly con- 

 vergent backwards. Head short and broad; snout vertically 

 truncate ; canthus rostralis obtuse ; loreal region slightly concave • 

 tjmpanum very distinct, not much smaller than the eye ; a strong 

 and narrow glandular prominence from the eye to the shoulder over 



