iSHi.'} AND TROQS FROM SINGAPORE*. 225 
the limbs inconspicuous. The lengtli of the nianua from the wrist 
to the tip of the longest Bnger is neark eciual to the width of tlie 
head. Vomerine teeth in two strni^ht ridges, ucarl)^ m ilie same 
rigiit line ; the diatiince of the two series apflirt is scHfcely more than 
ha!f the length of each seriea ; the ridges eoraraejjce from the anterior 
inner margins of tlie inner nostrlb. 
mohm. 
Length of head and body 4'5 
„ hind hmb from anus to end of longest toe 6-75 
„ foiit 2 
„ hand , , , , 1*45 
Tills species much resembles the East-HEmakyau and Assamese iJ. 
tnajrinttts, which it equals or excels in size ; hut the tympannm is 
proportionally twice as large, and the webs of the feet are less 
deve^o]^ed (they are siiorter in the fore feet of /?, maj:imm than in 
those of R. reinwardti or R, tnalabaricus) . From R. reimmmiti 
the new form is dij^thiguished by size^ coloration, and by ttic 
fingers being imperfectly weiiljed. 
The single specimen sent, Dr. Dennya informs me, was of a beau- 
tiful efnerahl-green colour when ali%'e^ and belonged to a well-known 
Chinese merchant named Whampoa, who refused an offer of five 
htmdr-ed dollars for it. When the animal died, it was presented to 
the IlntRes Museum, It Is said to have originally come from China ; 
but the precise locality is not known. 
In the smaller forma of Rhacophorus, the development of the folds 
of skin along the sides of the limbH and ab'ive the anus is very re- 
markable. Mr. Wood- Mason called my attention to this in the 
case of maculatus (and I find the same in R. reinwardti), and 
noticed that this form shows a passage towards the curious Flying 
Frog of Borneo figured by Widlace in tlie ' ^lalay Archipelago,* vol. L 
Kan A MAtRODON. (Plate XXL fig. 4.) 
I am indebted to M, Koulenger for the identification of this 
species. The specimens differ considerably fri*m the descriptions 
given by Dum(5rtl and Bibrnn', and by Glinther*, hoth of whom 
describe the tympannm as small. This character, however, is. I learn 
from M. Boulenger, more variable than lias hitherto been supposed; 
and as there is, in the British Museum, a specimen from Java, the 
original locality of the species, that agrees with those from Singa- 
pore, I accept M. Houlenger's opinion. The following is a descrip- 
tion of the Singapore specimens. 
Head very broad and flat— the breadth across the gape being 
greater tlmn the distance from gape to muzile, and equal to the 
length of the hind foot in females, exceeding it by one eighth to 
one tenth in males. Snout depressed, rounded at the end ; no trace 
of caitthus rostraiis ; the nostrils near the end of the snout and dis- 
tant from the eye, their distance apart being about half of the in- 
1 Erp. G.:'n, Tiii. p. 382. *■' BhL-MuB. Cat. Bntr, Sal p. a 
Proc. Zool. Syc— 1861, No, XV. la 
