CTSTIGNATHID^. 183 



J ft. Cophyla phyllodactyla. 



Copliyla phyllodactj^a, Boetftj. I. c. 



Snout obtuse. Toes webbed at the base. Skin smooth, g-raiuiLir 

 on the bell}- and under the thighs ; a fokl from the eye to the arm. 

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

 shaped spots : legs more or k^ss distinctly cross-barred. 



Nossi Be. 



B. ARCIFERA. 



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



Jouvn. Ac. Fhilad. (2) vi. 1866. 

 Bufoniformia and Arcifera, Cope, Chech-list of N.-Amer. Batr. 8)- 



Rept., Bull U.S. Nat. Mus. i. 1877. 



Coracoids 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. CYSTIGNATHID^. 



lianidnB, part., Cystignathidse, part,, Discoglossidse, part., Aly- 



tidva, part., Uperoliid?e, Bombinatoridfe, part., Hylodidse, part., 



GUnth. Cat. Batr. Sal. 

 Scaphiopodidffi, part., Cystignathidaj, Cope, Nat. Hist. Rev. 186-). 

 Cj'stignathidfB, Cope, Joiini. Ac. Philad. (2) vi. 18C6. 

 Bombinatoridre, part., PlectromantidEe, Alj'tidas, part., Polypeda- 



tidse, part., RanidcC, part., Discoglossidae, part., Mivart, Proc. 



Zuol. 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 vertebra? are procoelian and without ribs. The diapophyses 

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

 lated, most conspicuously so in Chirole^ites and allies. Nevertheless 

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

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

 diapophysis is much stronger, or with the Hi/Iida', in which the 

 terminal phalanges are quite different. The coccyx is articidated 

 by two condyles, and without diapophyses. 



A great number of species have a fronto-parictal foutaneUe, but, 

 as in Bufo and Hijh(, this character does not seem to me to be of 

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

 replaced by a rugose cranial ossification, Cali/ptoce^halus showing 



