KUNGL. SV. VET. AKADEMIENS HANDLINGAB. BAND 55- NIO 4. 16 



Råna limnocharis Wiegm. — 53 specimens from Ban Sakerat, south of Korat, 

 Jan. 1912, caught on a rice-field. The largest specimen measures 52 mm. between 

 snout and vent. Two specimens Koon Tan, Northern Siarn, May 1914. 



The colour is very similar in all specimens; the gronnd colour above olive grey 

 with dark spöts, more or less distinctly arranged in cross-bands. Often a broad, or 

 narrow light dorsal stripe. Hinder side of thighs reticulated with light and dark, 

 limbs cross-banded. Under surfaces uniform yellowish white, finely dotted with black 

 on the margin of the lower jaw. 



Råna mortenseni Boulenger. — 1 specimen, Eastern Siarn, Ban Sakerat, south 

 of Korat, Jan. 1912, 66 mm. between snout and vent. 



This specimen, a male, corresponds very vvell with Boulenger's description in 

 Ann. Nat. Hist. (7) 12, 1903. In agreement with this it differs from the very nearly 

 allied R. guentheri Boulenger by shorter nose, more distinct digital disks, a thicker 

 glandular fold and the absence of outer vocal sacs. Beside the »strong roundish 

 swelling> on the inner side of the fore-arm (recorded by Boulenger in this species 

 already in 1893, Ann. mus. Genova 1893, p. 331), there is another gland immediately 

 above the axilla, and in front of this a band-like swelling at the angle of the mouth. 

 Apparently this species has a wide geographical range, being found in Upper Burma 

 (by Féa), in Koh Chang Island (by Mortensen) and now on the Korat plateau 

 between these places. Towards the East it is represented by R. guentheri in Annam 

 and Tonkin. 



Råna erythrea Schleg. — Two specimens, Eastern Siarn, Ban Sakerat, south of 

 Korat, Jan. 1912. 58 and 65 mm. between snout and vent. 



Råna scutigera n. sp. 



Vomerine teeth in two very distinct oblique series between the - • 



choanse, not reaching behind the posterior edge of the latter; the space 

 between the groups of teeth larger than their distance from the chöanse. 

 Head depressed, as broad as long; snout rounded, a little longer than 

 diameter of eye; canthus rostralis distinct; loreal region oblique, con- 

 cave; nostril much nearer the tip of the snout than the orbit; inter- 

 orbital space broader than the upper eyelid; tympanum very distinct, 

 two thirds the diameter of the eye. Fingers and toes slender with %™a scutigera 

 well developed disks; disk of the first finger considerably smaller than 

 those of the other fingers; first finger not reaching the tip of the second, toes 

 broadly webbed, the formula being : 



2 2 2 1 



r i' r 2' 



