1899.] BATRAOHIAWS OF THE MALAY PENINSULA AND SIAM. 893 



end o£ the snout than the spiraculum, the distance between the 

 eyes twice the distance between the nostrils, and about equal to 

 the width of the mouth. Spiraculum on the left side, directed 

 backwards and upwards, a little nearer the anus than the end of 

 the snout, visible from above and from below. Anus opening on 

 the right side. 



Tail from 3| to 4 times as long as deep ; acutely pointed ; 

 upper crest convex, a little deeper than the lower, not extending 

 on to the back ; depth of the muscular portion at its base about 

 half the greatest total depth. 



Mouth. The large powerful beak is entirely black ; the upper 

 mandible terminates in front in a long shai-p tooth-like prominence ; 

 the lower mandible is bicuspid, each "tooth" being long and 

 sharp. The lips are bordered with very short fleshy papillae : 

 inside the upper lip are five series of fine, black teeth ; the 1st 

 series is uninterrupted, the second slightly interrupted by the 

 individual teeth being " grouped with intervals "' about the centre 

 of the line ; the remaining series are broadly interrupted, the 5th 

 being very short and difficult to distinguish : the lower lip has 

 also five series of teeth; the 1st is short and uninterrupted, the 

 second long and uninterrupted, the remainder broadly interrupted 

 and very short. 



Colour (in life). Above yellowish brown, mottled with darker 

 brown, a very distinct dark brown crescent-shaped mark above 

 each nostril. Below white, purplish grey about the chin and 

 throat. Tail yellow, mottled with brown, an horizontal dark 

 line along the median line of the basal third of the muscular 

 portion. Iris golden. 



Size. Total length 52 mm. ; length of body 18*5 ; width of 

 body 12-5 ; length of tail 33-5 ; depth of tail 9. 



Hahits. Those of ordinary Rana tadpoles. 



10. Eana ltmnochaeis Boie. 



^ana gracilis, Blgr. Cat. Batr. Sal. p. 28. 



Localities Sf Hahits. This species is very numerous in Bangkok, 

 Aphere I have observed it in the months of Jan., Feb., Mar., June, 

 July, Aug., Oct., Nov., and Dec. Small specimens abound in the 

 evening, hopping about the grass, they are very active. In the 

 hot weather, in spite of the burnt up condition of the ground and 

 grass, these frogs still appear at night, and, when one tries to 

 catch them, take refuge down the sun-cracks in the parched earth. 

 Specimens over 50 mm. snout to vent are of comparative rare 

 occurrence. 



I have also found this species common along the Bangpakong 

 river, at Chantaboon, Paknam Menam, in fields beyond Sapatoom, 

 Ayuthia, Pakpreo, Dong Phya Fai (up to 900 feet elevation), in 

 Siam ; at Taiping, Kuala Kangsar, and Chumar in Perak, and at 

 Alor Star and Jenan in Kedah. 



In a former paper (P. Z. S. 1896, p. 902) I wrote of this species 

 Proc. Zool. Soc— 1899, No. LVIII. 58 



