CTSTIGXATHrD.E, 183 



2, Cophyla phyllodactyla. 

 Ooplivla pliyllodactyla, Boettg. I. c. 



Snout obtuse. Toes webbed at the base. Skin smooth, granular 

 on the belly and under the thighs ; a fold from the eye to the arm. 

 Greyish brown above, with transverse blackish-browu A- or M- 

 shaped spots : legs more or less distinctly cross-barred. 



Nossi Be. 



B. ARCIFERA. 



Bufouiformia, part., and Arcifera, Cope, Nat. Hist. Rev. 1865, and 



Jouni. Ac. Philad. (2) vi. 18G6. 

 Bufoniformia and Arcifera, Cope, C/iecl--Iist of N.-Amer. Batr, ^• 



Bept., Bull U.S. Nat. Mas. i. 1877. 



Coraeoids and precoracoids divergent, connected by an arched 

 cartilage (the epicoracoid), which is free from, and generally over- 

 laps, the corresponding cartilage of the opposite side. 



5. CYSTiaNATHID^. 



Ranida;, part., Cystignathidoe, part., Discoglossidse, part., Aly- 



tidse, part., Uperoliidse, Bombiuatorida?, part., Hylodidse, part., 



Giinth. Cat. Batr. Sal. 

 Scaphiopodidfe, part., Cystiguathidae, Cope, Nat. Hist. Rev. ISG-j. 

 CystignathidfB, Cope, Jouryx. Ac. Philad. (2) vi. 18C6. 

 Bombinatorida3, part., Plectromantidse, AlytidjB, part., Polypeda- 



tidse, part., Ranidte, part., Discoglossidae; part., Mivart, Proc. 



Zool. Soc. 1869. 



Upper jaw toothed ; diapophyses of sacral vertebra not, or but 

 slightly, dilated ; terminal phalanges never claw-shaped. 



The omosternum is always destitute of a bony style, and may be 

 rudimentary. The sternum is generally a cartilaginous or more or 

 less ossified plate, and provided with a bony style in a few genera 

 only. 



The vertebras are proccelian and without ribs. The diapophyses 

 of the sacral vertebra are usually cylndrical, sometimes slightly di- 

 lated, most conspicuously so in Cliirolej(:)tes and allies. Nevertheless 

 these genera distinctly belong to this family, and cannot be con- 

 founded with the Fclobatida', in which the dilatation of the sacral 

 diapophysis is much stronger, or with the lii/lidce, in which the 

 terminal phalanges are quite different. The coccyx is articulated 

 by two condyles, and without diapophyses. 



A great number of species have a fronto-parietal fontanelle, but, 

 as in Bufo and Hyla, this character does not seem to mc to be of 

 generic importance. A few species have the skin of the head 

 replaced by a rugose cranial ossification, Calyptocej^halus showing 



