1920.] G. A. BouLENGER : Frogs of the Genus Rana. 153 



Fingers rather slender, the tips dilated into small discs, which 

 are longer than broad and bear a groove separating the upper 

 from the lower surface ; a more or less distinct lateral dermal 

 margin ; first finger as long as or a little longer than the second, 

 third longer than the snout ; subarticular tubercles rather large 

 and prominent. 



Hind limb rather long, the tibio-tarsal articulation reaching 

 the ej'e or the tip of the snout, or between these two points, the 

 heels strongly overlapping when the limbs are folded at right angles 

 to the body ; tibia 4 to 4^ times as long as broad, if to 2 times in 

 length from snout to vent, shorter than the fore limb, as long as 

 or a little shorter than the foot. Toes rather slender, with discs 

 same as those of the fingers, webbed to the discs of the third 

 and fifth, two phalanges of fourth free ; the web shorter in the 

 young ; outer metatarsals separated nearly to the base ; subarticu- 

 lar tubercles rather large and prominent; no tarsal fold; inner 

 metatarsal tubercle oval or elliptic, 5- to ^ the length of the inner 

 toe ; a small outer tubercle very rarely present. 



Skin smooth ; a broad and prominent glandular dorso-lateral 

 fold from above the tympanum to the hip, its distance from its 

 fellow, on the back, 5^ to 7 times in length from snout to vent; 

 a glandular fold from below the eye to the shoulder, followed by a 

 gland situated a little higher up and sometimes continued as an 

 interrupted lateral fold. 



Bright green, dull green, or yellowish brown above, rarely with 

 a very narrow light vertebral streak ; a dark brown stripe, generally 

 darker or black at the edges, along each side of the head and body; 

 tympanum usually reddish brown ; dorso-lateral fold white or 

 yellowish white, sometimes with a black streak or broad band on 

 the inner side ; a white or yellowish streak on the upper lip and 

 another from the shoulder to the groin ; limbs- reddish-buff or 

 yellowish brown, without dark cross-bands^ often speckled or finely 

 streaked with dark brown. Lower parts white ; often a blackish 

 line along the lower lip. 



Males with internal vocal sacs and stronger fore limbs. 



Nasal bones narrow, oblique, widely separated from each other 

 and from the frontoparietals, which are broad and flat ; ethmoid 

 largely uncovered, truncate in front, not produced between the 

 nasals ; zygomatic process of squamosal short. Terminal phalanges 

 feebly expanded at the end. 



The tadpole has been described by van Kampen. Tail about 

 twice as long as body, pointed. Beak narrowly edged with black ; 

 a single, marginal, series of upper labial horny teeth, and two 

 series of lower labials, the outer uninterrupted, the inner narrowly 

 interrupted in the middle. Large specimens (body 18 millim. , tail 

 40) have three white streaks along the body. 



Habitat. Lower Bengal, Assam, Yunnan, Burma, Siam, Cochin- 

 China, Malay Peninsula and Archipelago as far East as Celebes. 



I cannot regard R. taipehensis. Van Denb., from Formosa, as 

 more than a variety of R. erythrcea. The two specimens which the 



