AND BATRACHIA FROM MADAGASCAR. 355 



Tibio-tai\s;il joint of adjH'essed leg reaches as far as the eye. 



Upper parts smooth witli a prominent little tubercle on each 

 side overlying the expanded ends of the diapophyses of the 

 sacral vei-tebrfe. Posterior parts of belly, sides, and of thighs 

 near the vent, granulate. 



Colour : Ground-colour dirty white ; dorsal surface blotched or 

 spotted with dull magenta, darkest on head and snout ; the 

 tubercle on sacral region surrounded by dark horseshoe-shaped 

 blotch ; a dark line fi'om eye, through tympanum, along side 

 nearly to a point reached by tibio-femoral joint of adpressed leg. 



Length from vent to snout 30 mm. 



Types in the Transvaal Museum, Cat. Kept. Nos. 1265 to 1271 ; 

 No. 1269 presented to the British Museum. Origin, Ambato- 

 haranana, forest of Central East Madagascar, 1911. 



The terminal phalanx is Y-shaped ; in P. notosticta it is broadly 

 Y-shaped ; and in P. inguincdis it is also Y-shaped. So I think, 

 in the diagnosis of the genus, this bone should be described as 

 Y-shaped or broadlj^ Y-shaped, rather tlian as T-shaped as in the 

 Brit. Mus. Cat. The internal structure of this species was 

 examined ; it is typical for the genus. 



liiblioijfaphij. 



(1) '-On the Madagascar Progs of the genus JJcuitidacti/lus." 



By G. A. Boulenger, F.R.S. P. Z. S. 1918, pp. 257-261. 



(2) " On a Collection of Batrachia from Madagascar, made during 



the year 19] 1." By Paul A. Methuen & John Hewitt, 

 B.A. Ann. Transvaal Mus., No. 2, vol. iv. 1913, 



pp. 49-6J:. 



(3) ''A comparative review of the Amphibian Faunas of South 



Africa and Madagascar, with some suggestions regarding 

 their former lines of dispersal." By John Hewitt, B.A. 

 Ann. Transvaal Mus., April 1911, pj^. 1-11. 



Pkoc. Zool. Soc— 1919. No. XXV. 



