KUNGL. SV. VKT. AKADKMIKNS II ANDUNGAR. BAND 47. NIO 6. ."{ I 



now nearly vanished; yet all the markings mentiomd in bhe preceeding specimen 

 can still be seen, although very much paler in colour. 



Specimen d; 17. •"> mm. in length between nose and vent. The back is consider- 

 ably lighter tlian in specimen c. Only a faint indication of the anterior pari of 

 the dark dorsal spöt can be distinguished. All other markings are still maintained 

 although very faint; the latera] stripe is most distinct immediately in front of and 

 behind the eye. When the dark colour of the specimens fades, small grains of dark 

 pigment are scattered in the pure white margin of the lateral band, in consequenee 

 of which the different colours begin to blend together. The dark lateral band fades 

 and disappears, the sides getting the same light colour as the back. In some speci- 

 mens the anterior part of the band is the first to disappear, in others the posterior, 

 and in some the whole band vanishes at once. By and by the specimens assume the 

 appearence shovvn by specimen e. 



Specimen e; 22.5 mm. in length. The whole specimen above greyish white w it h 

 very small dark döts scattered över the light bottom, reddish white below. When 

 alive, the animals have the concealed parts of the legs beautifully salmon-red. 



This colour is found in all the large specimens (the largest is 29 mm. in length), 

 and probably it lasts during the whole life. Only in one of them (23 mm.) the 

 ground-colour is rather dark, although all bands and spöts have disappeared. 



Beside this series there are some somew r hat different forms which may be con- 

 sidered as branches from the chief stem. Such a one is the series a t , 6j which differs 

 in having the lumbar spöt very small ; neither is there any distinct dorsal band, but 

 this may depend on the specimen a x being so young that the dark juvenile colour of 

 the back is still maintained to its whole extent. Regarding the specimen b x it is so 

 old, that the band might have disappeared, even if it has been there. By this varia- 

 tion the species seems to come near to Rappia horstockii Schleg., characterized by 

 a dark lateral band, bordered with white. 



Another variation is shown by specimen a 2 . The lateral band is very broad 

 and has, like the spöts, remarkably broad dark margins, which dissappear låter than 

 other parts of the dark markings. Even the dorsal band has been maintained in 

 this specimen longer than usual; the contrast between the ground-colour, which already 

 has assumed its light tint, and the remaining dark markings is therefore in this spe- 

 cimen more distinct than in the others. 



All the specimens were caught in the grass during rain. Professor Lönnberg 

 tells as remarkble that all specimens caught one day (april 3 th ) were greyish white 

 with feet and concealed parts of legs salmon-red, but the next day no such speci- 

 mens could be found on quite similar localities; they were then all of them darker 

 with different markings. 



