1920.] G. A. BoulEngEr : Frogs of the Genus Rana. 55 



Hind limb rather long, the tibio-tarsal articulation reaching 

 the tip of the snout or between the eye and the tip of the snout, 

 the heels overlapping when the limbs are folded at right angles 

 to the body ; tibia 3 J to 4 times as long as broad, i^ to 2 times in 

 length of head and body, as long as or a little shorter than the fore 

 limb, as long as or a httle longer than the foot. Toes moderate, 

 the tips dilated into small but very distinct discs, ^ to |- webbed, 

 3 phalanges of fourth free ; subarticular tubercles moderate ; a 

 feeble tarsal fold ; inner metatarsal tubercle feebly prominent, f 

 to f the length of the inner toe ; no outer tubercle. 



Skin smooth or with small warts or feeble corrugations ; a 

 strong fold from the eye to the shoulder. 



Rich yellow to orange brown above, in life, with dark brown 

 spots, with or without a light vertebral streak ; a dark brown cross- 

 band between the eyes, edged with pale yellow in front, usually 

 followed by a faint W-shaped marking, the ends of which extend 

 behind the eyes ; sides of body finely spotted with very dark brown 

 and white ; lips with more or less distinct dark vertical bars ; limbs 

 with dark cross-bands. I^ower parts white, with pale purple and 

 golden shades, with or without dark brown spots on the throat. 



Males without vocal sacs. 



Nasal bones large and in contact with each other and with 

 the frontoparietals ; ethmoid covered over ; zygomatic branch of 

 squamosal long, extending to the eye. 



Eggs very large and few, unpigmented, 3 millim. in diameter, 

 in a female measuring 35 millim. from snout to vent. 



Measurements in niilliinetres. 



I. Penang. 2. Larut hills, Perak. 3. Gunong Inas, Pahang. 4—5. Great 

 Natuna. 6. Andamans {/?. gracilis, var. andamanensis , Stol.). 



Habitat. Higher forests of Penang, mountains of Malay Penin- 

 sula (Perak and between Perak and Kedah), Andamans,' Natuna 

 Islands. 



1 One of the types of R. gracilis v. andamanensis, received from the Indian 

 Museum in 1893, belongs to this species, whilst the others are stated by Annan- 

 dale to be referable to R. dor'iae and R. limnochai-is. 



