CYSTIGNATHID A. 183 
2. Cophyla phyllodactyla. 
Cophyla phyllodactyla, Boettg. 1. 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-brown A- or M- 
shaped spots ; legs more or less distinctly cross-barred. 
Nossi Bé, 
B. ARCIFERA. 
Bufoniformia, part., and Arcifera, Cope, Nat. Hist. Rev. 1865, and 
Journ. Ac. Philad. (2) vi. 1866. 
Bufoniformia and Arcifera, Cope, Check-list of N.-Amer. Batr. § 
Rept., Bull. US. 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. CYSTIGNATHIDA. 
Ranid, part., Cystignathide, part., Discoglosside, part., Aly- 
tide, part., Uperoliide, Bombinatoridie, part., Hylodide, part., 
Giinth. Cat. Baty. Sal. 
Scaphiopodidee, part., Cystignathide, Cope, Nat. Hist. Rev, 1865. 
Cystignathidee, Cope, Journ. Ac. Philad. (2) vi. 186. 
Bombinatoridee, part., Plectromantidee, Alytide, part., Polypeda- 
tidee, part., Ranide, part., Discoglosside, part., Mivart, Proce. 
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 vertebre are proceelian and without ribs. The diapophyses 
of the sacral vertebra are usually cylndrical, sometimes slightly di- 
lated, most conspicuously so in Chiroleptes and allies. Nevertheless 
these genera distinctly belong to this family, and cannot be con- 
founded. with the Pelobatide, in which the dilatation of the sacral 
diapophysis is much stronger, or with the Hylidae, 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 me to be of 
generic importance. A few species have the skin of the head 
replaced by a rugose cranial ossification, Calyptocephalus showing 
