26 ARKIV FÖR ZOOLOGI. BAND 2. N.O 20. 



the figure cited, viz. 3, 5, 3, 2 or usually but 1, on respec- 

 tively 4th to 1st finger, the somewhat swollen tip not coun- 

 ted, but on the foot they are not so many as drawn by 

 BouLENGER. Without the tip they are in these specimens 

 4, 6, 4, 2, 1 on 5th to 1st toe, while in the figure we see 6, 

 8, 6 (5?), 3, 2. In a few exceptional cases we do not find 

 any distinct limits in the basal lamella, but usually the num- 

 ber given above is easily distinguished and certainly in no 

 case too great. 



Bufo bengruelensis Boul. 



BouLENGEB. Cat, Batv. sal. p, 299. Pl. 19, fig. 3. 



16 specimens, from 19,2 mm. to 35,5 mm. between snout 

 and vent. 



The colour varies considerably. In all specimens except 

 the smallest one, there is a broad light interorbital cross-band, 

 and in some we find a narrow light median stripe on the 

 back, which also sometimes is ornamented with large dark 

 and light spöts biserally arranged. Sometimes the whole 

 back is uniform dark-coloured as in the specimen figured by 



BoULENGER. 



Bufo superciiiaris Boul. 



BouLENGER. Proc. Zool. Soc. 1887, p. 565 and 1900 p. 436. 



Werner. Sitzher. Akad. Wissenscli. MuncJien 1897, p. 212 (B. 

 Igevissinuis). 



"Werner. VerJiandl. k. k. zool. hot. Gesellscli. Wien 1898, p. 

 202, pl II, fig. 1. 



Not less than 19 specimens of this beautiful frog are to 

 found in this coUection, varying in length between 26 and 

 138 mm. from nose to vent. All sizes thus being represented, 

 I have been able to examine the external variations of the 

 species depending on different ages, which examination may 

 be of a certain interest also because the young and adult 

 ones have to some degree been described as distinct species. 

 Boulenger's type-specimens for B. superciiiaris were small 

 specimens, while Werner had at least one large example 



