Reptiles and Batrachians from Madagascar. 105 



Total length 73 centim., iu which the tail enters for 17. 

 A single specimen {R. Baron). 



Langaha intermedia. (PI. V. fig. 6.) 



Intermediate between L. nasuta and L. crista-galli. Ros- 

 tral appendage half as long as the head, tapering to a sharp 

 point and serrated above at the end, of equal depth throughout 

 the basal half; the length of the appendage thrice and one 

 third its depth. In other respects like its allies. Scales 19 ; 

 ventrals 142 ; subcaudals 125. Coloration as in L. crista- 

 galli. 



A single specimen, measuring 85 centim. 



Nossi Be. 



Rhacopliorus opisthodon, 



■ Vomerine teeth in two strong oblique series beliind the level 

 of the choanffi, which are large. Head large, much depressed ; 

 snout rather long, truncate; cantlms rostralis distinct, straight ; 

 loreal region concave ; nostril much nearer the end of the 

 snout than the eye ; interorbital space broader than the upper 

 eyelid ; tympanum large, three fourths the diameter of the 

 eye. Fingers with a very indistinct rudiment of web ; toes 

 nearly entirely webbed ; disks rather large, measuring about 

 three fifths the diameter of the tympanum ; a small inner 

 metatarsal tubercle. The tibio-tarsal articulation reaches 

 between the eye and the nostril. Skin smooth, belly and 

 lower surface of thighs granular ; a strong fold from the eye 

 to the shoulder. Brown above, with blackish marblings; 

 loreal and temporal regions blackish ; a whitish streak on the 

 upper lip, from below the eye to below the tympanum. 



From snout to vent 87 millim. 



A single female specimen. 



Rhacophorus alhilabris. (PI. VI. fig. 1.) 



Vomerine teeth in two very small widely separated transverse 

 groups behind the level of the choana3. Head large ; snout 

 rounded; canthus rostralis angular; loreal region concave; nos- 

 tril equally distant from the eye and the end of the snout ; eye 

 large ; interorbital space broader than the upper eyelid ; tym- 

 panum half the diameter of the eye. Fingers much depressed, 

 extensively webbed ; the web between the two outer fingers 

 extends to the disks, that between the second and third from 

 the middle of the latter to the disk of the former ; toes 



