BATRACHIANS FROM SOUTHERN ANNAM. 435 



the eye ; distance between the nostrils considerably 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|— 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, ^-| 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, dorso-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 tympa.num ; 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 

 grey. 



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. 



Autlior's Nos. 5031 2657 2642 2639 2640 2641 5087 2638 2644 2645 2457 



Snout to vent. 45 43 42 43 40 50 43 42 42 41 40 



Head 15 14 14 14 13 16 15 15 14 13 13 



Width of head 14 14'5 14-5 14 13 15 14 14 14 13 12-5 



Snout 6 6-5 6 6 5-5 7 6 5 6-5 6o 6 6 



Eye 4'5 4"5 4'5 4"5 4 5'5 5 4'5 4'5 4'5 4"5 



Intei-oibital.. 3-5 3 3 3 3 4 3'o 3 3-5 3 3 



Tympanum.. 3-5 3-5 3 3 3'5 3-5 3-5 3 3-5 3 3 



Avm 26 25 25 25 25 29 26 24 25 23 22 



Leg 87 81 84 82 77 100 81 78 81 77 75 



Tibia 28 27 27 27 26 34 28 27 27 26 25 



Toot 26 25 25 25 23 30 25 25 25 23 22 



