178 . ENGYSTOMATID®. 
18. HEMISUS*. 
Hemisus, Giinth. Cat. p. 47; Cope, Nat. Hist. Rev. 1865, p. 100, and 
Journ. Ac. Philad. (2) vi. 1867, p. 199. 2 
Kakophrynus, Steindachn, Sitz. Ak. Wien, xlviii. 1863, p. 191. 
Pupil erect. Tongue subtriangular, broader in front. A cuta- 
neous ridge across the palate, between the choane, and another in 
front of the cesophagus. No tympanum. Fingers free ; toes free 
or slightly webbed at the base, the tips not dilated. Outer meta- 
tarsals united. Coracoids and precoracoids subequal in bulk; pre- 
coracoids horizontal, coracoids very obliquely directed backwards, 
latter connected with former by the simple epicoracoid cartilage ; 
omosternum cartilaginous; sternum rudimentary. Diapophyses of 
sacral vertebra slightly dilated. Terminal phalanges simple. 
Africa. 
1. Hemisus guttatum. 
Hemisus guttatum, part., Giinth. Cat. pp. 47 & 187. 
Engystoma guttatum, Rapp, Arch. f. Natwrg. 1842, p. 290, pl. 6. 
f.3&4; Smith, Ill, S. Afr., Rept., App. p. 27. 
Sternal apparatus. 
Habit stout. Head small; snout rather pointed, prominent, cunei- 
form; mouth small; lower jaw with three prominences in front ; 
eye small; interorbital space broad. Fore limb short, clumsy, 
adapted for burrowing ; fingers very short, pointed, first and second 
equal, fourth shorter. Hind limb short, the tarso-metatarsal arti- 
culation marking the eye; toes short, pointed, free, without subar- 
ticular tubercles ; a small inner metatarsal tubercle. Skin smooth ; 
a fold across the head, behind the eyes. Brown above, with round 
whitish spots. Male with a subgular vocal sae. 
S. Africa. 
a. Os Natal. Sir A. Smith [P.]. 
2. Hemisus sudanense. 
Hemisus guttatum, part., Giinth. Cat. pp. 47 & 187. 
? Engystoma marmoratum, Peters, Arch. f. Naturg. 1855, p. 58. 
* Hemisus obscurus, Grandid. Ann. Se. Nat. (5) xv.a. 20, p. 11.—Madagascar. 
