127 



2. The tarsometatarsal articulation reaches beyond 



the tip of the snout 3. A', macrops p. 128. 



B. Two tooth-like processes behind each choane. 

 I. Tympanum as large as the eye. 



1. The tarso-metatarsal articulation reaches beyond 



the eye 4- x - Widens p. 129. 



2. The tarso-metatarsal articulation does not reach 



beyond the eye 5. A', giganteus p. 130. 



II. Tympanum half the diameter of the eye 6. X. ophiodon p. 131. 



i. Xenobatrachus rostratus (v. Meh.). 



Choanacantha rostrata v. Mehely, Termesz. Fiizetek, XXI, 1898, p. 175, pi. XII. 

 Choanacantha mehely i Boulenger, Ann. Mus. Genova, (2) XVIII, 1898, p. 709, 



pi. VIII, fig. 5. 

 Xenorhina rostrata v. Mehely, Termesz. Fiizetek, XXIV, 1901, p. 233, pi. IX, 



fig. 10 (situs viscerum) ; pi. XI, figs. 1 — 2 (skull). 

 Xenorhina rostrata v. Kampen, Zool. Jahrb., Syst., XXXVII, 1914, p. 373- 



Habit stout. Tongue perfectly attached behind ; one tooth- 

 like process behind each choane. Head broader than long; 

 the side of the head, from tip of snout to shoulder, forms a 

 strongly curved line; snout pointed, strongly projecting, nearly 

 twice the diameter of the eye (in the adult) ; canthus rostralis 

 indistinct; loreal region very oblique, feebly concave; nostril 

 nearer to the tip of the snout than to the eye ; interorbital space 

 thrice the width of the upper eyelid ; tympanum more or less 

 distinct, its diameter equal to the length of the upper eyelid. 

 Tips of fingers not or feebly dilated, toes with very small 

 disks; fingers short, first a little shorter than second, which 

 is about as long as fourth; length of the fourth toe contained 

 3'/ 2 — 4 times in the distance between the vent and the poste- 

 rior border of the eye; third toe much longer than fifth; 

 subarticular tubercles and the small inner metatarsal tubercle 

 indistinct; no outer metatarsal tubercle; hind limb of various 

 length: the , heel does not reach the axil, or reaches farther, 

 to the tip of the snout. 



Skin smooth, with a few scattered small tubercles on the 

 upper surface ; the snout may be covered with small warts. 



Brown or slate-coloured above, sometimes with some dark 

 spots, each with a light centre, arranged in two or four longi- 

 tudinal series; a dark spot behind the tympanum; a fine white 

 or red line along the middle of the back and usually along 

 the hind limbs; posterior surface of thighs with a dark blackish 



