258 EKGTSTOMATIDiE. 



275. Calophrynus pleurostigma. 



Tschudi, 1. c. ; Bouleng. Cat. Batr. Ecaud. p. 158 (1882) ; id. Faun. 



Brit. Ind., Kept. p. 490 (1890) ; S. Flower, P. Z. S. 1896, p. 908, 



and 1899, p. 900 ; Bouleng-. Journ. Fed. Malay States Mus. iii, 



p. 62 (1908). 

 Bufo stvderi, Isenschmidt, Mitth, Nat. pes. Bern, 1903, p. 14, pi. v, 



fig. 2. 



Snout prominent, truncate ; canthus rostralis angular ; loreal 

 region vertical ; tympanum nearly as large as the eye, rarely 

 hidden under the granulate skin. Fingers short, first a little 

 shorter than second ; toes short ; tips of fingers and toes slightly 

 swollen; suharticular tubercles very prominent ; two rounded, 

 more or less distinct metatarsal tubercles. The tarso-metatarsal 

 articulation reaches the shoulder or the eye. Skin of the back 

 smooth or granular, very thick, glandular ; belly and lower surface 

 of thighs coarsely granular ; a more or less distinct lateral fold, 

 commencing from the eye. Brown or reddish above, with or 

 without longitudinal dark spots or bands converging on tlie head ; 

 a dark, Ught-edged round spot on the loin ; sides of body, throat, 

 and breast dark brown ; limbs usually Mith dark cross-bands, thighs 

 sometimes bright crimson on the sides. Male with an internal 

 vocal sac. 



From snout to vent 47 millim. 



Southern China, Tonkin, Burma, Siara, Malay Peninsula, 

 Sumatra, Natuna Islands, Borneo. Eecorded only from Johore, 

 Pahang, Selangor, and Singapore. 



Mr. Robinson makes the following remarks about specimens 

 observed by him on Gunong Tahan, alt. 3000 feet : — 



" Though only a single specimen of this frog was obtained, it 

 was probably anything but rare, as its peculiar note, which is 

 more like that of an insect than a batrachian, was constantly 

 heard in the evening after rain. The species lives in small holes 

 in tree-trunks, often at a considerable height from the ground, 

 and is to be secured by dropping salt into the water \\\i\\ which 

 the hole is generally filled, when the frog will rise to the 

 surface." 



Genus MICROHYLA. 

 Tschudi, N. Class. Batr. p. 71 (1838). 



Pupil round. Tongue elliptic, entire, free behind. One or two 

 dermal ridges in front of the cesophagus. Tympanum hidden. 

 Fingers free ; toes free or more or less webbed ; tips of fingers 

 and toes more or less dilated. Outer metatarsals united. No 

 prsecoracoids ; no omosternum ; sternum cartilaginous. Diapophyses 

 of sacral vertebra moderately dilated. 



China and South-Eastern Asia. 



Seven species are known from the Malay Peninsula. 



