12. MEGALIXALUS. 129 
Tongue heart-shaped. Snout rounded, as long as the orbital 
diameter; tympanum distinct. Fingers slightly, toes two-thirds 
webbed. The hind limb being carried forwards along the body, the 
tibio-tarsal articulation reaches the eye. Skin smooth, granular on 
the belly and under the thighs. Upper parts dark violet, with 
round yellow spots ; upper side of thighs coloured. 
E. Africa, 
ie Ds Rovuma Bay. Dr. Livingstone [P.]. (Type.) 
3. Megalixalus madagascariensis. 
Hyperolius madagascariensis, Giinth, Cat. p. 88. 
Eucnemis madagascariensis, Dum. § Bibr. p. 528. 
Hyperolius madagascariensis, Steind. Novara, Amph. p. 51. 
Tongue subrhomboidal, nicked behind. Snout rounded, as long 
as the orbital diameter ; tympanum hidden. Fingers webbed at the 
base, toes entirely webbed. The hind limb being carried forwards 
along the body, the tibio-tarsal articulation reaches the eye. Skin 
smooth, granular on the belly and under the thighs. Greyish above, 
closely and minutely speckled with brown; a blackish stripe along 
the canthus rostralis; thighs not coloured, or with a few brown 
specks. Male with a subgular vocal sac and an adhesive disk 
covering the throat. 
Madagascar. 
The specimens o-r differ much in colour from the typical form. 
Not having been able to perceive any structural difference whatever, 
I must consider them merely as a variety of M. madagascariensis, 
which may be called alboguttata. The blackish stripe along the 
canthus rostralis is missing, and the upper surfaces (except the 
thighs and arms) are covered with round, white, black-edged spots. 
u-c. 6 Q. Madagascar. 
d-e. 2 & yg. S. Madagascar. 
ee Mohambo. 
g-k.2 & her. Mahanora. 
l-n. 2. Anzahamaru. 
o-p. Q. S.E. Betsileo. 
g-r. 8 Madagascar (?). M. L. Bouton [ P.]. 
4. Megalixalus leptosomus. 
Hyperolius leptosomus, Peters, Mon. Berl. Ac. 1877, p. 619, f. 5. 
Habit slender. Snout short, rounded, as long as the eye; tympa- 
num hidden. Fingers webbed at the base, toes two-thirds webbed. 
The hind limb being varried forwards along the body, the tibio- 
tarsal articulation reaches in front of the eye. Skin smooth, 
granular on the belly and under the thighs. Brown; the snout and 
three stripes along the back white ; sides of head and body and outer 
side of leg and tarsus with white dots. 
Chincoxo, W. Africa. 
