84 



BULLETIN 58^ UNITED STATES NATIONAL MUSEUM. 



Ilahitat. — Boettger originally recorded this form from Shanp;liai 

 and later from tlie Lueshan Mountains near Kiukiang on the Yang- 

 tse-kiang, where it occurs together with Hyla cliinensis. Three Mon- 

 golian specimens, from the Tore River, have been referred to this 

 form doubtfully, as detailed above. 



List of specinums of Hyla immaculata. 



a P. 83. 



HYLA STEPHENI" Boulenger. 



1887. Hyla stepheni Boulenger, Proc. ZooL Soc. London, 1887, p. 579, pL li, 

 fig. 1 (type-locality. Port Hamilton, Korea); Ann. Mag. Nat. Hist. (6), 

 V, Feb. 1890, p. 142 (Ussuri River); Proc. Zool. Soc. London, 1890, 

 p. 326.— NiKOLSKi, Zap. Imp. Akad. Nauk, S. Peterburg (8), XVII, 

 No. 1, 1905 (part: Ussuri, etc.). 



This species was described by Boulenger from a specimen collected 

 at Port Hamilton, together with a specimen of true H. arhorea 

 japonica. It is professedly nearly allied to H. arhorea, and no com- 

 parison with the latter accompanies the description. 



Later on (1890) he records two specimens from the Ussuri River 

 of which he gives the measurements and says that the species ''is 

 easily distinguished from H. arhorea by the much larger and more 

 prominent metatarsal tubercle.' ' The length of the inner toe is given 

 as 4 mm. and that of the metatarsal tubercle as 2.5 mm. 



Through the kindness of the authorities of the British Museum, I 

 was able to examine these specimens during my visit in 1898. 



The type (Brit. Mus. 89.11.8.5) is in very poor condition (dried up) 

 and nothing can be made of it. The two other specimens, however, 

 referred by Boulenger to this species (Brit. Mus. 89.12.16.197.7), col- 

 lected by Doerries at the Middle Ussuri in 1886 (Fischer collection Nos. 

 754-5), are in very good condition and, compared with the Hondo 

 specimens of H. japonica then in the British Museum, show a difference 

 in the relative size of disks and metatarsal tubercle as follows: 



Digital disks much smaller than inner metatarsal tubercle H. stepheni 



Digital disks equaling metatarsal tubercle H. japordca 



In the latter, moreover, the ventral granulation is considerably finer. 



Whether the Ussuri specimens are identical with the Port Hamilton 

 type is now hard to determine, but we will have to accept Boulenger's 

 identification as correct. 



a For Mr. George Stephen, R. N., who collected the type. 



