MICROHYLA. 259- 



>Si/no2)sis of the Species. 



I. Toes free or webbed at the base. 



A. Snout shorter than orbit ; a single 



metatarsal tubercle. 



Toes quite free, the tips dilated into very small 

 disks ; tibio-tarsal articulation reaching the 

 temple or the eye M. inornata, p. 259. 



Toes webbed at the base, the tips dilated into 

 well-developed disks ; tibio-tarsal articu- 

 lation reaching the eye or between the eye 

 and the tip of the snout M. leucostigma, p. 260. 



B. Snout at least as long as orbit ; two 



metatarsal tubercles. 

 Toes with a very slight rudiment of web, the 

 tips simply swollen or very feebly dilated ; 

 tibio-tarsal articulation not reaching beyond 



eye M. ornata, p. 260. 



Toes webbed at the base, the tips dilated into 

 small but very distinct disks ; tibio-tarsal 



articulation reaching the eye M. butleri, p. 261. 



Toes webbed at the base, the tips dilated into 

 small but very distinct disks ; tibio-tarsal 



articulation reaching tip of snout or beyond. M. achatina, p. 261. 



II. Toes at least half-webbed, the tips dilated 



into rather large disks ; tibio-tarsal 



articulation reaching beyond tip of snout. 



Toes half- webbed ; a single metatarsal tubercle. M. annectens, p. 262. 



Toes webbed to the disks; two metatarsal 



tubercles M. berdmoi-ii, p. 263. 



276. Microhyla inornata. 



Bouleng. P. Z. S. 1890, p. 37; S. Flower, P.Z.S. 1899, p. 905; 

 Laidlaw, P. Z. S. 1900, p. 887. 



Habit moderately slender. Snout obtuse, shorter than the 

 orbit. Fingers and toes moderately elongate, the tips dilated into 

 very small disks ; first finger much shorter than second ; toes 

 quite free ; subarticular tubercles very distinct ; a very small, 

 round inner metatarsal tubercle. The tibio-tarsal articulation 

 reaches the temple or the eye ; tibia f to ^ length of head and 

 body. Back smooth or with small smooth warts. Grey or dark 

 brown above, spotted or marbled with black, the spots sometimes 

 forming longitudinal stripes ; sides of head black, with a series of 

 white spots on the upper lip, sometimes confluent into a streak ; 

 lower parts brown or spotted with brown ; throat of male blackish. 

 Male with an internal vocal sac. 



Total length 23 miUim. 



First described from Sumatra, this small frog has since been 

 recorded from Borneo, Burma, and Siam. Specimens were 

 obtained by the Skeat Expedition on Bukit Goah, near Biserat, 

 in Jalor, and Dr. Werner has sent me one from Perak, 



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