226 
ON RliSPTILCS ASn FROGS FROM 9ING.VPORB. 
[Feb. 1, 
teml between nostril aitd eye. Eye of moderate ^h^t the tiiftmeter 
about equnl to the length of the fourth finger. Tympanum dtsthict^ 
nertrly as large as the eye. Lower jaw witii two prominent apophyses 
in front, fitting into hollows inside the upper jaw ; in a female sent 
the^e apopiiyses are inconspicuous. Vomerine iccth on two straight 
ridges running ohhquely back from the interior angle of the inner 
nostrils, and converging behind so as to meet, if prolonged, nearly in 
a right angle, but rather widely separated ; a strong osseous transverse 
ridge behind the choanae. No vochI sac. A strong fold from behnid 
the e3*e rnntiing liorizontally to over the tympannm, then turned down 
at an obtuse angle and running to the shoulder. Posterior portion 
of upper eyelid tubercular. Skin of body and limbs smooth. Limbs 
atout^ the tips of both toes and fingers slightly swollen ; the distance 
from Tcnt to knee is ahont half the length o( the body from snout 
to vent or a tittle more; from vent to metatarsal tnbercle is longer than 
ibe body. The metatarsHl tubercle is elongate, not flattened. The 
toes are scarcely fully webbed ; the terminal two piiabuiges of the 
fourth toe have only a narrow fringe along their sides, and the web 
is deeply emarginate ; a narrow fold along the inside of the font. 
Colour (inspirits) light brown above, one specimen (a male) having 
a pale stripe down the back, very little pnlet below, the sides and 
lower portion of the limbs, the sides of the body^ breast and chin 
marbled with rich brown. 
6 2 
inches, inchcfl. 
Length from nose to vent (i 4 9 
of head 2 (3 l"? 
Breadth of head , 31.'> 2'2 
Length of hiiut leg 8*6 7'5 
hind foot 2-ti5 21.^ 
Three specimens are sent — two apparently mnles, the third a 
female. I believe all were obtained at Singapore ; but I have not 
heard positively that this was the case. 
This form is closely allied to Ham fuscu \ but has a much 
broader head ; the eye is smaller, and the tympanum larger; the 
muzzle is tiatter, the nostrils nearer together^ and the web between 
the toes of the land feet much lesa developed. 
In the specimens of U,fusca from Penang, described by Stoliczka, 
there does not ap|>ear to be any passage towards the Singapore form ; 
for the toes are said to he fully webbed. Mr. Boulenger informs 
nie that he considers R.Jiisca also a variety of R. nmcrotfon. 
In the Journal of (he Asiatic Soeiety of Bengal for 18/9, vol. 
xlviii. pt. 2, p. 130, I described a supposed new species of 
sirhim under the name of //, macnlata, I overlooked the fact that 
this name had previously been given by Dum^ril and Bibron to the 
Cltinese speciea //. benvelii. Under lliesc circnmstauces 1 propose 
to change the name of the Burmese form to Uypsirhtna maculota. 
' Blylli, J. A. S. B. xiiv. \myT% p. 7ir> (the volume is wrojiglj quoted by An- 
deraon m Jiisiv) ; TlveoWId, "Cat. Eept,/' J. A. B. B. 1863, extTO number, p. 79 ; 
Audenwa, P. 1871, p. 107 : SiolUka, J. k. S. B, 1873, ilii. pt. p. Ub, 
