96 NOTES ON THE FLYING FROG. 



Notes on the Flying Frog 



Rhacophorus nigropalmatus. 



By R. Hanttsch, Ph.d. 



Mr. A. D. Machado, one of the most constant benefactors to 

 the Raffles Museum, presented last year a specimen of a Flying- 

 Frog from Pahang which I have only recently been able to 

 identify as Rhacophorus nigropalmatus. As only two specimens of 

 this species have so far been recorded, the one obtained by Dr. 

 Charles Hose from the Akan River, Borneo (see G-. A. Boulenger, 

 A. M. N. H. (6), XVI, p. 170), and the other obtained by Mr. L. 

 Wray in the Piah Valley, Upper Perak (see S. S. Flower, P. Z. S., 

 1899, p. 899), this third specimen appears to deserve a special 

 note. 



Mr. Machado writes : " I caught this specimen in an old 

 prospecting pit one morning (January 1899) at Kuala Merbao in 

 Ulu Pahang. He had evidently fallen into it and could not get 

 out. I found him swimming about in the water. The pit was 

 about twelve feet deep." 



The specimen shows in external characters no difference 

 from those described by Boulenger and Flower, except slightly 

 as regards its cutaneous fringes and coloration. The fringes of 

 the arm seem to be more developed than in either of the other 

 two specimens : there is one not only along- the outer edge of 

 the fore-arm continued right to the tip of the fifth finger, but 

 also a smaller triangular one along the inner side, beginning at 

 the proximal end of the upper arm and ending at the distal end 

 of the fore-arm, being widest at the elbow joint. There is a 

 semilunar flap on the tibio-tarsal articulation, as in the other 

 specimens, arid, after a break, a narrow fringe along the outer 

 side of the tarsus to the tip of the fifth toe. A very much 

 smaller fringe runs along the first toe. A flap of skin above the 

 cloaca is scarcely noticeable. 



