387 



A LIST OF THE BATRACHIANS KNOWN TO INHABIT 



THE MALAY PENINSULA, WITH SOME REMARKS 



ON THEIR HABITS, DISTRIBUTION, &c. 



By A. L. BUTLER, f.z.s., m.b.o.u., &c. 



(Director of Game Preservation, Soudan Government.} 



{Continued from page 205 of this Volume.') 



Family Engystomatidce. 



31. Calophrynus pleurostigma, Tscbudi. 



Calophrynus pleuro stigma , Blgr., Cat. Batr. Sal., p. 158 ; S. Flower, 

 P. Z. S., 1896, p. 908, and P. Z. S., 1899, p. 900. 



Mr. Ridley and Mr. Flower appear to be the only naturalists who 

 have obtained this frog in the Peninsula. Mr. Ridley procured it in 

 Selangor in July 1897 and Mr. Flower at the foot of Gunong Palai, 

 Johore, in September of the same year. 



Flower remarks that this species is supposed to be the author of a 

 remarkable strident call heard in certain Malay jungles, which may 

 be written " waalk, waalk." I believe however that the note he refers 

 to is one which puzzled me for a long time, but which I recently found 

 to be produced by Rana hascheana. 



Distribution. — Burma, S. China, Siam, Malay Peninsula, Natunas, 

 Borneo. 



32. Microhyla ornata, Dum. and Bibron. 



Microhyla ornata, Boulenger, Cat. Batr. Sal., p. 1 (55 ; id. Fauna 

 Ind., Kept., p. 491 ; S. S. Flower, P. Z. S., 1899, p. 901, pi. Is, figs. 

 1, la, lb ; Laidlaw, P. Z. S., 1900, p. 887. 



Flower collected this little frog in Penang, and from Alor Star and 

 Jenan in the State of Kedah. The Skeat Expedition also procured a 

 single specimen at Kuala Aring in Kelantan. Its distribution in the 

 Peninsula is probably local, as in three years collecting in Perak, 

 Pahang, and Selangor I never came across it. 



According to Flower the species is nocturnal in habits, concealing 

 itself during the day under stones, logs, etc., in crevices, and among 

 dead leaves. The same writer describes its croaking as an astonishing 

 volume of sound for so small a creature to produce. 



The tadpoles of this and other species of Microhyla are very peculiar, 

 being almost perfectly transparent, with the viscera showing through 

 conspicuously. The head, seen from above, is remarkably square, and 



