360 Mr. G. A. Boulenger on a new Species of Frog. 



This second species may be characterized thus : — Scales 

 in 25 series. Head depressed, flat, rather narrow, like 

 that of an Oxyrhopus. Snout flat, obtuse. Eye very 

 small. Rostral shield broad, just reaching the upper surface 

 of the head ; anterior frontals half the size of posterior ; 

 vertical broad, not much longer than broad ; occipitals as long 

 as vertical and ])ostfrontals together. Loreal elongate ; one 

 prgeocular, reaching the upper surface of the liead, but not 

 the vertical ; two postoculars. Eight upper labials, the fourth 

 and fifth entering the orbit. Temporals 1 + 2 + 3, the fore- 

 most in contact with the lower postocular only. Four lower 

 labials in contact with the anterior chin-shields. Ventrals 

 228; anal divided; subcaudals more than 50 (tail injured). 

 Dentition diacrantherian. 



Upper parts uniform black, lower whitish. 



One specimen from Betsileo. Total length 54 inches, the 

 tail (restored) measuring 8 inches. Feeds on frogs. 



XXXV. — Description of a new Species of Frog from Mada- 

 gascar. By Gr. A. BOULENGEE. 



Ra7ia guttulata. 



Vomerine teeth in two small groups behind the level of the 

 hinder edge of the choan^. Head depressed; snout short, 

 rounded ; loreal region concave ; interorbital space as broad as 

 or slightly broader than the upper eyelid ; tympanum small, 

 hidden. Fingers rather short, first not extending as far as 

 second ; toes rather short, united to the tips by a scarcely 

 emarginate membrane ; tips of fingers and toes dilated into 

 small disks j subarticular tubercles small ; a blunt, oval, inner 

 metatarsal tubercle. The hind limb being carried forwards 

 along the body, the tibio-tarsal articulation reaches the eye. 

 Skin granular above, smooth beneath ; a fold from the eye 



