CTSTIGNATHID^. 183 



2. Cophyla phyllodactyla. 



Coptyla phyllodactyla, 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 blaokish-brown A- or M- 

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



Nossi Be', 



B. ARCIFERA. 



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



Journ. Ac. Philad. (2) vi. 1866. 

 Bufoniformia and Arcifera, Cope, Check-list of N.-Amer. Batr. ^■ 



Sept., Bull. U.S. Nat. Mua. i. 1877. 



Coracoids and preooracoids 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^. 



BanidfB, part., Oystignathidse, part,, Discoglossidse, part,, Aly- 



tidss, part., Upsroliidse, Bombinatorida;, part., Hylodidse, part., 



G'dnth. Cat. Batr. Sal. 

 Scaphiopodidse, part., Cystignathidse, Cope, Nat. Hist. Rev. 1865. 

 OyslignathidsB, Cope, Journ. Ac. Philad. (2) vi. 1866. 

 Bombinatoridas, part., Plectromantid«e, Alytidae, part., Polypeda- 



tidsB, part., Ranidse, part., Discoglossidse, part., Mivart, Proc. 



Zool Soc. 1869. 



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

 slightly, dUated ; 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 vertebrae are procoelian and without ribs. The diapophyses 

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

 lated, most conspicuously so in GTiiroleptes and allies. Nevertheless 

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

 founded with the PelobatidcB, in which the dilatation of the sacral 

 diapophysis is much stronger, or with the Hylidce, in which the 

 terminal phalanges aie quite diflferent. The coccyx is articulated 

 by two condyles, and without diapophyses. 



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

 as in Bwfo and Hyla, 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, Galyptoeephalus showing 



