1920.] G. A. BoutENGER : Frosts of the Genus Kana. 155 



British ^luseum has received under that name from the California 

 Academy are young (24 and 28 millim. long from snout to vent) 

 and are distinguished by a shorter wel), not reaching the discs of 

 the third and fifth toes and leaving three phalanges of the fourth 

 free ; they have a small outer metatarsal tubercle and the back of 

 the thighs streaked with black and white. I find the two last 

 characters combined in a j'oung from Ok Yam, S.E. Siam, which, 

 in the extent of the web between the toes, is intermediate between 

 the typical R. erythriva and R. taipehensis. Similar young have 

 been noticed by Annandale under the name of R. lytleri. I have 

 also seen young specimens from Siam, typical in coloration, but 

 with the web not more developed than in R. taipehensis. Werner 

 (Verh. Zool.-bot. Ges. Wieii, 1893, p. 357) records an adult speci- 

 men from Borneo with " Zehen mit Ausnahme der vierten mit J 

 Schwimmhauten. ' ' 



[This species, which is particularly common in rice-fields in 

 the Malay Peninsula, usually sits on floating water-plants or in 

 bushes at the edge of water, into which it leaps when disturbed. 

 I have also seen it — if the Indian form is really synonymous with 

 the Malay one — on stones forming the inner coating of a well in 

 Orissa. A'. A.] 



78. Rana macrodactyla. 



Hvltiraiia macrodactvla. Giinth. Cat. Bafr.SnI. p /j, pi. ii, tijj. C. 1 1858). 



and Rept. Brit', hui. p. 424 (1864.); Stollczka. Pvvc. As. Soc. Beng. 



1872, p 104. 

 Rana trivittata, Hallow. Proc. Ac. Philad. i860, p. 504. 

 V Hylorana sitbaerttlea. Cope, Proc. Ac. Philad. 1868. p. i |o. 

 Rami macrodactvla. Bouleng. Cat. Batr. Ecavd. p. 54 (1882); Boettg. 



Ber. Ojfenb. Ver. Nat. 1S88, p. 96 ; Boulcng. Faun. Ind.. Rept. p. 465 



^1890) ; S. Flower, Proc. Zool. Soc. 189c), p. 895 ; I.aidlaw, Proc. Zool. 



Soc. 1900, p. 88.S , Boulengf. Faitn. Mai. Pen.. Rept. p. 238 (1912'); 



Malcolm Smith, Joiirn- N.H. Soc. Siam, II, 1917, p. 2(13 , -pLr^r^r^fi^ff^. 



Vomerine teeth in more or less oblique groups or short series 

 between the choantt, nearer to each other than to the latter or 

 equally distant. 



Head moderately depressed, much longer than broad ; snout 

 pointed, strongh- projecting beyond the mouth, longer than the 

 eye; canthus rostralis obtuse ; loreal region not very oblique, con- 

 cave ; nostril much nearer the tip of the snout than the ej'e ; dis- 

 tance between the nostrils equal to the interorbital width, which 

 equals or exceeds that of the upper eyelid ; tympanum very distinct, 

 5 to once the diameter of the eye, 2 to 4 times its distance from 

 the latter. 



Fore limb slender; fingers long and slender, the tips dilated 

 into very small discs with a groove separating the upper from the 

 lower surface; first and second fingers equal, third as long as or 

 longer than the snout ; subarticular tubercles moderately large, 

 ])rominent. 



Hind limb very long and slender ; the tibio-tarsal articula- 

 tion reaches the tip of the snout or a little beyond, the heels strong- 

 ly overlap when the limbs are folded at right angles to the body ; 



