30 



MR. G. A. BOULENGER ON SOME SPECIES [Feb. 5, 



from Sikkim), measuring up to 68 millim. from snout to vent, and 

 in a single Formosan, 60 millim. long, the skin is perfectly free 

 from the skull, which shows no trace of rugosities, and the width of 

 the interorbital space equals or a little exceeds the width of the 

 upper eyelid. The skull of Cliinese specimens, up to 48 millim., 

 resembles that of the Himalayan, whilst larger specimens, up to 

 70 millim., are intermediate between the latter and the Burmese- 

 Malayan, both as regards the width of the interorbital space and 

 the rugosities, the skin adhering to the fronto-parietals, hut not to 

 tbe nasals. In all the other specimens (Rangoon, Tenasserim, 

 Siam, Camboja, Cochinchiua, Singapore, Sumatra, Nias, Borneo, 

 Java, Philippines, Celebes) the skin adheres to the fronto-parietals in 

 individuals only 40 millim. long ; and in the adult the interorbital 

 space becomes very broad and concave, once and a half to twice the 

 width of the upper eyelid, strong angnlar postorbital processes 

 are developed, and the skin adheres not only to the fronto-parietals 

 but also to the nasals and squamosals, as may be seen at a" in the 

 figure (p. 28). Here follow some measurements, iu millimetres, 

 of the skulls of specimens from various localities : — 



Disk of third finger one half to three fifths the diameter of the 

 eye. In some specimens the libio-tarsal articulation reaches the eye, 

 in others the end of the snout, in most between these two points. 



This species presents the well-known colour-variety characterized 

 by longitudinal dark bands on the head and body (var. sexvirguta 

 s. quadrilineata). But, as already noticed by Anderson on an 

 Assamese specimen, the passage between this variety and the typical 

 form exists ; we have such intermediate specimens from Darjeeling 

 and from Formosa. In spotted examples, a small X- or hourglass- 

 shaped dark marking, extending to between the eyes, is frequently 

 present. The hinder side of the thighs is usually brown, with small 

 whitish spots ; but these may be absent, as usually in R. cruciger, 

 or they may be large and separated by a dark network, as usually in 

 R. maculatus ; these variations do not correspond with any other that 

 I can find. 



Hab. Southern China and Eastern Himalayas to the Malay 

 Peninsula and Archipelago. 



Rhacophorus maculatus. 



Hyla maculata, Gray, 111. Ind. Zool. i. pi. Ixxxii. fig. 1 (1832). 



