CHAP, vi CLASSIFICATION 139 



I. Aglossa. Sacral diapophyses dilated. ^ Ar , Tr . ecA 1/IQ 

 Vertebrae opisthocoelous, with ribs. / AbLUb6A) P' 14d ' 

 II. Phaneroglossa. 

 A. Arcifera. 



a. Sacral diapophyses dilated. 



a. Terminal phalanges not claw-shaped. 



Opisthocoelous, with ribs, ^-' JDISCOGLOSSIDAE, p. 152. 



Procoelous, without ribs, ^JBUFONIDAE, p. 166. 



Procoelous, or opisthocoelous, "\ 



. ., max. VPELOBATIDAE, p. 160. 



without ribs, 



B. Firmisternia. 



Dyscophinae, p. 235. 



a. Sacral diapophyses dilated 





 Genyophryninae, 



ENGYSTOMATIDAE 



b. Sacral diapophyses cylindrical max. Raninae, p. 238. 



RANIDAEf " 



mand. P- 236. 



- Enyystomatinae, p. 225. 



max. Ceratobatrachinae, 

 P- 237. 



(max. 

 ~1T 

 a. 



Dendrolatinae, p. 272. 



Concerning the evolution of the classification of the Anura, 

 it is interesting to follow the changes of the value attached 

 to the various anatomical characters by systematists. At first 

 the presence or absence of teeth and of adhesive discs on the 

 fingers and toes were considered to be of prime importance for 

 the division of the Phaneroglossa. 



Dumeril et Bibron, 1841. "Erpetologie generate." 



I. PHRYNAGLOSSES = Aglossa of Wagler : Pipa and Xenopus. 

 II. PHANROGLOSSES. 1. With teeth, a. Without discs : Eaniformes. 



b. With discs : Hylaeformes. 

 2. Toothless .... Bufoniformes. 



Stannius, 1856 (see p. 8), separated the Engj-stomatidae as " Systomata," 

 and used the presence or absence of the "manubrium sterni" (omo- 

 sternum) as a character of distinction between his Bufoninae and Raninai-. 



