16, S 
Taylor: Philippine Amphibia 
245 
Measurements of Rana magna Stejneger. 
mm. 
Len^h, snout to vent 
Length of head, from angle of jaw 
Width of head, at tympanum 
Length of snout 
Diameter of eye 
Eye to nostril 
Distance between nostrils 
Tympanum 
Eye to tympanum 
Upper eyelid 
Interorbital distance 
Foreleg 
Longest finger, from base of palm 
Hind leg 
Femur 
Tibia 
Foot 
Longest toe 
130 
58 
53 
22 
14 
13 
10 
7 
9.1 
11 
13 
67.5 
33 
164 
70 
60 
89 
64 
Variation . — The collection of the Bureau of Science contains 
specimens of this species ; my own collection also contains speci- 
mens from various localities. The young, like the young of Rana 
macrodon, differ rather markedly from the adult. In R. magna 
the upper eyelid is broader than the interorbital distance; the 
tympanum is distinct and not as far from the eye ; the tubercles 
and folds on body are less numerous; there is a rather distinct 
broken dorsolateral fold from eye to above groin (rarely contin- 
uous) , and there are other shorter longitudinal folds on the sides ; 
the webs on the feet are somewhat excised between the toes ; the 
disks on the fingers are slightly more distinct; the tibiotarsal 
articulation reaches variously from eye to tip of snout ; the dorso- 
lateral fold is separated from the supratympanic fold. The body 
above is dark brown of varying shades, sometimes with darker 
spots ; groin strongly marked with black ; the youngest specimens 
usually have a strong, dark brown temporal spot; labials with 
large brown spots which are continuous on both upper and lower 
jaws; posterior part of limbs dark, mottled with yellow and 
white; usually a loreal stripe present. 
In the adult specimens the length of the first and fourth 
fingers varies somewhat. Occasionally the first is longer than 
the fourth, frequently shorter; the toes are frequently fully 
webbed, the membrane reaching more than halfway on the toe 
disks or pads; the large teeth of the females are low, and not 
prominent as in the males; males invariably have small vocal 
sacs, the openings being rather small, back and near the angle of 
169611 3 
