904 MR. S. 8. FLOWER ON THE REPLILES AND [ Dec. 1, 
rupted, the three inner broadly interrupted and very short, 
decreasing in size towards the mouth, the innermost row is 
sometimes very small and inconspicuous; lower lip with three 
series of teeth, the two outer uninterrupted, the third narrowly 
interrupted, the three rows are about the same length, but the 
median is the longest and the outermost the shortest. 
The colour of these tadpoles in life is brick-red above, and pale 
yellow beneath, but the whole skin is very transparent, the eyes 
and the intestines being clearly seen. On the back on each side 
behind the eyes is a patch of granulated skin ; in some specimens 
there is a similar strip on the hinder part of the back on each side - 
parallel with the tail, and a large patch on each side of the belly, 
oblong in shape, and each converging together towards the tail. 
A good specimen measures 37 mm. in total length ; body 19; 
width of body 10; tail 22; depth of tail 6. 
Depth of muscular portion of tail at its base between 3 and 4 mm. 
The above measurements are taken from a spirit-specimen. 
12. Rana tuctuosa, Ptrs. (Plate XLVI.) 
Rana luctuosa, Boul. Cat. Batr. Sal. p. 68. 
This handsome little Frog appears to have hitherto only been 
recorded from Borneo; in March 1896 I found it common about 
certain small ponds on Penang Hill at an elevation of 2000 feet. 
They were generally in long grass near the water’s edge; when 
alarmed they would jump into the water, but before long crawl out 
again. 
Colour (from life).—Top of head and back rich dark chocolate- 
brown (in very small frogs of this species the back is a very bright 
red, more vermilion than chocolate), bordered on each side from 
the nose to the insertion of the hind leg by a very distinct white 
line. Sides of head, neck, and body are very dark brown or black. 
The tympanum is dark reddish-brown. Along the lower part of 
the sides of the body are a few white spots in an irregular line 
from angle of mouth to thigh. Lower surfaces—chin and throat 
dark brown, remainder dirty buff, darker on limbs. Limbs very 
dark brown or bluish-black, with bluish-white or very pale grey 
marblings ; the black turns to brown on the toes, and the marbling 
is also less conspicuous on the feet. 
These colours seem permanent and not variable according to 
surroundings, as is the case with many batrachians. 
Adult specimens are 45 to 50 mm. from snout to vent. 
Hab. Malay Peninsula; Borneo. 
Tadpole, “* Koldok-ikan” (Malay). In March 1896, in a pond 
of clear water (2200 ft. elevation) in the jungle on Penang Hill, 
there were a large number of tadpoles of this species and little 
frogs just leaving the water. 
Description of the Tadpole. 
Length of body once and a half its width, considerably more 
than half the length of the tail. Nostrils nearer the end of the 
