474 ADDENDA. 



sligMly developed, of toes indistinct ; metatarsal tubercle indistinct. 

 The hind limb being carried forwards along the body, the tarso- 

 metatarsal articulation reaches far beyond the tip of the snout. 

 Skin everywhere smooth ; a narrow glandular fold from the eye to 

 the side of the body. Dark olive above ; glandular fold and a cross 

 band between the eyes lighter ; a black, light-edged spot in the 

 inguinal region ; hind limbs with black cross bands ; sides of thighs 

 and lower surface of tibise dotted with whitish ; brown beneath, 

 with darker vermiculations. From snout to vent 60 millim. 

 Madagascar. 



a. 5 • East Betsileo. Rev. Deans Oowan [C.]. 



3. Plethodontohyla brevipea. 



Series of palatine teeth forming a ~\y . Snout short, rounded ; 

 canthus rostralis distinct ; interorbital space broader than the upper 

 eyelid ; tympanum slightly distinct, two thirds the diameter of the 

 eye. Fingers and toes short, the tips simply swollen ; first finger 

 shorter than second ; subarticular tubercles and metatarsal tubercle 

 very indistinct. The hind limb being carried forwards along the 

 body, the tarso-metatarsal articulation reaches the posterior border 

 of the eye. Skin shagreeiied ; a fold from the eye to the shoulder. 

 Uniform dark brown above ; throat brown ; belly dirty white, 

 variegated with brown. From snout to vent 34 millim. 



Madagascar. 



a. $. East Betsileo. Eev. Deans Oowan [0.]. 



Add a new genus : — 

 4. PLATYPELIS. 



Pupil horizontal. Tongue large, oval, entire, and free behind. 

 Vomerine teeth in two small groups close together behind the level 

 of the choanae. Tympanum slightly distinct. Fingers with a rudi- 

 ment of web ; toes webbed at the base, the tips dilated into regular 

 disks. Outer metatarsals united. Coraeoids strong; precoracoids 

 weak, resting upon coraeoids ; no omosternum ; sternum a small 

 cartilaginous plate. Diapophyses of sacral vertebra moderately 

 dilated. Terminal phalanges "f-shaped. 



Madagascar. 



1. Platypelis cowanii. 



Head depressed; snout very short, rounded; canthus rostralis 

 scarcely distinct ; interorbital space as broad as the upper eyelid ; 

 tympanum nearly as large as the eye. Fingers short, first much 

 shorter than second, slightly webbed at the base, the tips dilated 

 into large, truncated disks ; toes short, one-fourth webbed, the disks 

 smaller than those of the fingers; suljarticular tubercles feeble; a 

 very indistinct inner m'etatarsal tubercle. The hind limb being 

 carried forwards along the body, the tarso-metatarsal articulation 

 marks the centre of the eye. Skin smooth above and beneath. 



