CHAP. VI CLASSIFICATION I 39 



I. Agl 



glossa Satn-al diapopl.yses .lilated. U QLOSSA, p. 143. 

 Vertebral' ojustliocooloiis, with ribs, j ' 



II. I'liancroirlo.ssa. 



A. Anit'era. 



a. Sacral dia]io])liyses dilated. 



a. Terminal phalanges not claw-shaped. 



Opisthocoelous, with ribs, '^^ JdISCOGLOSSIDAE, p. 1.^2. 



Procoelous, without ribs, ||| BUFONIDAE, p. 166. 



, Procoelous, or opisthocoelous, 'j 



.,, , ., max. ^PELOBATIDAE, p. 160. 



without ribs, —7,-^ I 



f max. Amphujnathodon- 



j8. Terminal phalanges claw-shaped— | "'^"d. <'■'"««. 1'- l^"*^- 



HYLIDAEj max. ,. ,. .„,, 

 Hyhnae, p. 189. 



max. JTcmiphradiiiac, 

 mand. P- 210. 

 max. Cystignathinac, 



^T P 211. 



Dcndrophryniscinac\ 

 5 p. 227. 



max^ Dygf^op/ii^Kic^ p. 2:35. 



Genyophryninac, 

 iaaiid. P- 236. 



- Emiystomatinac, \k 22."). 



,' max. Ceratobatrachinar, 

 T^^^^. P- 237. 

 max. 



i. Sacral diapophyses cylindrical — 



CYSTIGNATHIDAE 



U. Firmisternia. 



a. Sacral diapophyses dilated — 



ENGYSTOMATIDAE 



h. Sacral diapophyses cylindrical — 



KAXIDAE 





 



lianinae, p. 23S. 



Deiidrohatinae, p. 272. 

 VO 



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 systeniatists. 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 ft Bibroii, 1841. " Erpetologie generaU-.'^ 



I. Phrynaglosses = Aglossa of Wagler : Pijxi iuid Xenopus. 

 II. Phan^ROGLOSSES. 1. With leetli. .'. Without discs : Raniiormes. 



//. Witli discs : Ilylactbriiies. 



±. Toothless .... Bufoniibrfnes. 



Stannius, 18uG (see p. 8), separated the Engj'stoniatidae as " Sy.^toniata," 



and used the presence or absence of the " nianubriuni sterni " (onio- 



steruuin) as a character of distinct ion between his Bufoninae and Raninae. 



