1908.] BATRAUHIANS OF THE GENUS MEGALOPHRYS. 413 



Originally described from Java, this curious-looking frog has 

 since been found in other parts of the Malay Archipelago and in 

 the Malay Peninsula. The numerous specimens in the British 

 Museum are from Java, Borneo, Palawan, Balabac, Samar and 

 Dinagat Ids. (Philippines), Sumatra, and Bukit Besar in Jalor. 



It is a sluggish and thoroughly nocturnal animal. Nothing- 

 has been observed concerning its breeding-habits ; but I find the 

 eggs to be large, those in the oviduct of a specimen 83 millim. 

 long measuring 3 millim. in diameter. The larvf^ were first 

 described by Max Weber* from Java, and Lai'dlawf and 

 Annandale t have published observations on specimens obtained 

 in the Malay Peninsula. These tadpoles are found in mountain- 

 streams with gravelly beds and are remarkable for the funnel-like 

 float formed by the lips, which are beset with minute horny teeth ; 

 these are not connected in any way with definite ridges or lamellfe, 

 but radiate along the anterior surface of the funnel. According to 

 Annandale, the funnel-shaj^ed lip is capable of assuming two very 

 distinct forms, according to the jjosition of the tadpole : — (1) When 

 the animal is hanging from the surface-film, as it frequently does, 

 this structure becomes a translucent rhomboidal or lozenge-shaped 

 float, depressed in the centre towards the mouth, but otherwise 

 nearly flat ; (2) when, on the other hand, the animal is resting on 

 the bottom, the float takes on the appearance of a pair of slender 

 processes, continued upwards on the sides, like a pair of horns. 

 As in other Pelobatidfe, the spiraculum is sinistral. The tail is 

 more than twice as long as the body, the total length of the 

 largest tadpole being about 40 millim. The coloration is of a 

 very dark brown, even on the belly. 



2. Megalophrys nasuta. (Plate XXII.) 



Oeratophrys montana, var., Schleg. Abbild. p. 30 (1837). 



Megaloiohrys montana (non Kuhl), Cantor, Cat. Mai. Kept 

 p. 140 (1847). 



Ceratophryne nasuta Schleg. Handl, Dierk. ii. p. 57, pi iv 

 fig. 72 (1858) ; Giinth. Cat. Batr. Sal. p. 36 (1858). 



Megalophrys montana, j)art.. Giinth. Rept. Brit. Ind. p 413 

 <1864). 



Megalophrys chysii Edeling, Tijdschr. Nederl. Dierk. 1864, 

 p. 205, and Nat. Tijdschr, Nederl. Ind. xxvii. 1864, p. 265, pi. — ,' 



Geratop)hrys nasuta Schleg. Dierentuin, Rept. p. 58, fig. (1872). 



Megalophrys nasuta Giinth. Ann. & Mag. N. H. (4) xi. 1873, 

 p. 419; Boideng. Cat. Batr. Ecaud. p. 443 (1882); S. Flower,' 

 Proc. Zool. Soc. 1899, p. 913; Werner, Zool. Jahrb., Syst. xiii! 

 1900, p. 498; Isenschmid, Mitth, Nat, Ges. Bern, 1903, p 21- 

 Beddard, Proc. Zool. Soc. 1907, p. 324, figs. 



Tongue entire or feebly nicked behind. Vomerine teeth pre- 

 sent, in two widely separated small groups on a level with the 

 posterior border of the choanae. Head large, 1| to 2 times as broad 



* Ann. Jard. Botan. Buitenzorg, 1898, Sujipl. ii. p. 5. 



t Pi-oc. Zool. Soc. 1900, p. 889. 



X Fascic. Malay., Zool. p. 275 (1903). 



