314 Dr. A. Glintlier 07i BatracMans from Perak. 



thighs. This band is minutely spotted with dark brown 

 principally along the centre. There is also a triangular dark- 

 centred mark of the same colour on the anal region, extending 

 to the top back surface of the thighs. The legs and arms 

 banded in the same way. 



" Beneath, throat dark brown, passing into yellowish on 

 breast ; abdomen hair-brown, minutely spotted with whity 

 brown. Legs and arms, palms of hands and feet the same. 

 Irides red-brown, diamond-shaped, horizontal. The colour 

 and form of markings are subject to considerable variation, 

 and the intensity of colour is in a great measure subject appa- 

 rently to the will of the animal. It may range from dark to 

 pale brown. I have not been able to find out why they 

 change colour ; they do not seem to change when frightened, 

 nor does the colour of the surface on which they rest have any 

 effect on them, but when in the dark they are usually light- 

 coloured, and when in the light dark-coloured. 



" They inhabit the hills of Perak from 3000 feet upwards, 

 and live in holes in trees which are so situated as to contain 

 more or less rain-water. They have a loud, flute-like, musical 

 note, which they utter at irregular intervals, principally during 

 the night. The form and size of the hole in which they are 

 seems to have a great deal to do with the loudness of the note, 

 as specimens when extracted from their holes have far more 

 feeble vocal powers than they had when in them. The pitch 

 of the note is also much altered by the resonant properties of 

 the cavity. These frogs blow themselves out with air, and 

 look more like bladders than anything else. When inflated 

 tKey float on the surface of the water, and will remain motion- 

 less for a long time with legs and arms stretched out." 



Bufo quadriporcatuSy Blgr. 

 (PI. XVI. fig. C.) 



This species was described and figured from a single and 

 not very well-preserved specimen, apparently a male, in this 

 journal, vol. xix. p. 347, pi. x. fig. 4 (1887). Mr. Wray has 

 sent a female specimen in a better state of preservation. The 

 whole of the surface is densely covered with larger and smaller 

 conical or semiglobular tubercles, the larger tubercles being 

 placed in a series continuous with the parotoid, and in an 

 irregular row along each side of the vertebral line, also the 

 eyelids and the head between the eyes are covered M'ith small 

 tubercles. Two metatarsal tubercles of moderate size. There 

 is no tarsal fold of the skin, but its place is occupied by a 

 row of four horny conical tubercles, each with an acute black 



