BATRACHIANS FROM SOUTHERN ANNAM. 435 



the eye ; distance between the nostrils consiclevably greater than 

 the interorbital width, which is equal to the upper eyelid ; 

 tympanum very distinct, |— | the diameter of the eye, which is 

 3-4 times as long as its distance from the latter. 



Fingers moderate, the tips swollen into very small discs which 

 do not bear a groove ; 1st longer than 2nd ; subarticular tubercles 

 large and prominent. 



Hind limb long and slender, the tibio-tarsal articulation 

 reaching far beyond the snout ; heels strongly overlapping when 

 the limbs are folded at right angles to the body ; tibia 5-6 times 

 as long as broad, 1-jL- 1| times in length from snout to vent, longer 

 than the foot. Toes with small discs, more developed than those 

 of the fingers, and bearing a groove separating the upper from 

 the lower surfaces ; web reaching to the disc of the 5th toe and 

 to the 3rd on its outer side, last two phalanges of 4th free. 

 Outer metatarsals separated nearly to their base ; no tarsal 

 fold ; subarticular tubercles strongly developed ; inner metatarsal 

 tubercle oval, prominent, g-| length of inner toe ; a very small 

 round, distinct tubercle at the base of the 4th toe. 



Skin smooth or very finely granulate, a few enlarged scattered 

 tubercles on the back, a, A -shaped glandular fold between the 

 shoulders, and short oblique folds crossing the thighs and tibiae ; 

 a narrow, prominent, clorso-lateral fold from the eye to the hip, 

 and two short folds from behind the tympanum enclosing a 

 triangular black patch. 



Greyish-brown above, uniform or faintly mottled with darker; 

 a well-defined, rich, dark brown patch from the eye to the 

 shoulder, enclosing the tympanum ; snout below the canthus 

 rostralis darkish ; limbs with narrow dark cross-bars ; a brown 

 streak along the back of the arm and another along the front of 

 the tibia. Below whitish, the chest and throat speckled with 



gfey. 



Males with internal vocal sacs, and a brown nuptial prominence 

 on the 1st finger. 



Types from Sui Kat. Type series, Author's Nos. 2638, 2639, 

 2640, 2641, 2644, 2657. 



Measurements in mm. 



