13. CASSINA. 131 
13. CASSINA. 
Cystignathus, sp., Dum. § Bibr. viii. p. 418; Giinth. Cat. p. 30 
Kassina, Girard, Proc. Ac. Philad. vi. 1853, p. 421; Cope, Nat, Hist. 
Rev. 1865, p. 115. 
Pupil vertical. Tongue heart-shaped, free behind. Vomerine 
teeth. Tympanum distinct. Fingers free, toes free or slightly 
webbed, the .tips not dilated. Outer metatarsals not separated. 
Omosternum and sternum with a bony style. Terminal phalanges 
simple. 
Tropical Africa. 
This genus is closely allied to the following. 
1. Cassina senegalensis. 
Cystignathus senegalensis, Giinth. Cat. p. 30. 
Cystignathus senegalensis, Dum. § Bibr. p. 418; Smith, Ill. 8. Afr. 
pl. 62. ; 
Kassina senegalensis, Girard, Proc. Ac. Philad. vi. p. 421. 
Cystignathus argyreivittis, Peters, Arch. f. Nuturg. 1855, p. 55. 
Vomerine teeth in two oblique groups between the choane. Head 
as broad as long; snout rounded, without canthus rostralis, its - 
length more than the greatest orbital diameter ; interorbital space as 
broad as the upper eyelid; tympanum slightly distinct, two thirds 
the width of the eye. Fingers and toes short, quite free ; an oval 
inner, and a very small rounded outer metatarsal tubercle. The 
hind limb being carried forwards along the body, the tarso-meta- 
tarsal articulation reaches the tympanum. Skin smooth, slightly 
granular on the belly and under the thighs. Light brownish or 
olive above, with large elongate dark-brown spots, generally con- 
fluent into three stripes along the back ; light olive-brown beneath, 
the throat blackish in the male. Latter with a large, longitudinally 
ovate, adhesive disk on the throat, and two introverted external 
subgular vocal sacs; the throat, on the sides and behind the 
adhesive disk, strongly and regularly plaited, 
Tropical Africa. 
-a-d. 39. Cape of Good Hope. Sir A. Smith [P.] 
e. Very bad state. Zambesi. Sir J. Kirk [P.]. 
2. Cassina wealii. (Pxare XI. fig. 7.) 
Vomerine teeth in two small indistinct oblique groups between 
the choane. Head broader than long; snout rounded, without 
canthus rostralis, as long as the ereatest orbital diameter ; interor- 
bital space as broad as the upper eyelid ; tympanum slightly distinct, 
half the width of the eye. Fingers slender ; toes moderate, slightly 
though distinctly webbed at the base ; two nearly equal-sized meta- 
tarsal tubercles. The hind limb being carried forwards along the 
body, the tarso-metatarsal articulation reaches the eye. Skin smooth, 
K2 
