16 ^VED. ZOOL. EXP. TO SIAM, L. O. ANDERSSON. 3. BATEACHIANS. 



(the figures indicate the joints free from web, above the line on the inner, below the 

 line on the outer side, counting from the first toe); a small inner metatarsal tubercle, 

 no outer. If the dimension of the tibia is marked off from the knee forwards along 

 the body, it reaches the tip of the snout. Skin above partly ossified, viz. a large 

 square plate between the eyes, extending from their anterior margin to the level of 

 the posterior edge of the tympanum, two semicircular plates on the snout, forming 

 canthi rostrales, and two very small plates, one above each tympanum. A narrow 

 glandular fold from the eye above the tympanum to the anterior part of the side 

 of the body, where it dissappears; remaining upper surfaces smooth; belly coarsely, 

 under surfaces of thighs moderately, granular. 



When alive this frog was pretty yellow; when caught it grew rapidly paler, 

 and the yellow nearly disappeared. In spirit the ground colour is whitish grey with 

 faint dark markings on the back and more distinct ones on the sides; immediately 

 behind the interorbital osseous plate a large angular spöt, the branches of which 

 vanish before the middle of the back; on the sacral region of the back some small 

 distinct black spöts. A blackish brown band from the tip of the snout, bordering 

 the canthus rostralis, extends along the edge of the upper eyelid, of the tympanum, 

 and of the glandular fold to behind the axil; behind the tympanum this band is 

 rather broad, sharply limited above and below; on the loreal region only its upper 

 margin is well defined, while the lower fades into the light margin of the upper lip; 

 on the sides of the body some small distinct rounded black spöts. The hind limbs 

 with faint dark cross bands; the hinder side of the thighs reticulated with dark and 

 light. Lower parts uniform dirty yellowish white; the chin white. The toes are 

 blackish brown. 



One specimen, a male, from Hat Sanuk, the Siamese Malaya, near the Tenas- 

 serim boundery, l2 /2 1915, caught on a cactus. Dermal folds above the axil possibly 

 indicate outer vocal vesicles. 



Measurements : 



Total length (from snout to vent) 48 mm. 



Breadth of head 17 > 

 Length of head (from the hind margin of tympanum) 17,6 » 



of snout 7,8 » 



Diameter of eye 6 



» of tympanum 4,2 » 



Length of humerus 10 



From elbow to tip of 3d finger 24 



Length of fem ur 27 



» of tibia 27 



of tarsus with 4th toe 35 



In spirit this specimen corresponds very wcll with the figure of Råna (jraminea 

 BOULBNOBR from Hainan (Proc. Zool. S. London 1899, plate 67), and evidently this 



