COPE ON THE BATRAOniA SALIENTIA. Ill 



wanting or weak, cartilaginous or fibro-cartilaginous proximally.* 

 Ear perfectly developed. 



G-ROTJP A. — External metacarpi free, separated by natatorial mem- 

 brane. Terminal phalanges continuous, conic, simple. Manubrium 

 slightly developed. Ear perfectly developed. Eronto-parietal bones 

 perfectly developed. 



Genera : 3Iyxopliyes, Griinther ; Fseudis, "Wagl. ; and probably 

 Lysapsus, Cope, in whicli tbe sacral diapopbyses are slightly dilated, 

 as in some species of Crinia. 



These genera exhibit a structure more similar to that of the true 

 BancB than anything in this or the preceding sub-orders. The first- 

 named genus is Australian ; the two remaining South American. 



Geoup B. — External metacarpi bound together. This group em- 

 braces twenty- three genera (perhaps even more), and a considerable 

 variety in physiognomy and special characters. About half the 

 genera have a fronto-parietal fontanelle ; seven genera are provided 

 with digital dilatations, which are supported by phalanges formed as 

 in many of the arboreal Raniformia, and not as in the IlylidcB of the 

 same region. The following sketch will exhibit many of the minor 

 peculiarities of the genera : — 



I. Toes free, the terminal phalanges with transverse or divaricate 



terminal processes. No fronto-parietal fontanelle ; the pre- 

 frontals extensively in contact, typically joining the anterior 

 margin of the fronto-parietals. Xiphisternum slender, weak, 

 cartilaginous Hylodes. 



II. Toes free or slightly webbed, the terminal phalanges with or 



without distal processes. No fronto-parietal fontanelle, the 

 superior plate of the ethmoid produced anteriorly, separating 

 the fronto-nasalia.f Proximal xiphisternal piece osseous or 

 fibro-cartilaginous, typically styliform. 



a. Toes slightly webbed ; terminal phalanges with pro- 

 cesses. 

 A tarsal dermal wing ; tongue oval, ad- 

 herent Ulosia.l 



• Except in Limnocharis. 



f These bones are in a very few instances partially in contact. 



J I do not know the sternum of this genus, or whether it is truly distinct from 

 Limnocharis. I am also in doubt as to the sternum of Phyllohafes, Crossodactf/lus, 

 Enliydrohius, Gomphobates, Livperus, Strahomantis, and Tarsopterns, 



