Notes on some Victorian Land Planarians. 91 



Victoria, having the widest distribution of the known forms. 

 Possibly, from a form similiar to it, the others have been 

 derived. 



The second group contains the dark-coloured varieties, 

 in which the upper surface of the body is characterised by 

 its dark colour — either blue, green, or brown. This may 

 again be subdivided into two groups, one of which has a 

 dark, and the other a light-coloured ventral surface. 



The third group contains the light-coloured varieties 

 marked dorsally by dark stripes. This again can be 

 conveniently subdivided into two groups, the one of which 

 has a median, and hence an odd number of dark stripes ; the 

 other having a median light line of body colour, and hence 

 an even number of dark stripes. 



The various forms yet known can hence be tabulated 

 conveniently as follows : — 



(«.) Uniform light tint on upper and lower surface, no dark 

 stripes. 



G. alba. 



(b) Dark tint (blue, green, or brown) on upper surface. 



(1) Dark ventral surface — 



G. cerulea. 

 G. spenceri 

 G. demhji. 



(2) Light ventral surface — 



G. woMiallce. 

 G. frosti. 



(c) Light tint (shade of yellow) on upper surface. 



(1) Even number of dark stripes — 



G. munda. 

 G. mc'mahoni. 

 G. hogii. 

 G. sulphureus. 



(2) Odd number of dark stripes — 



G. mediolineata. 



G. quinquelineata. 



G. adca. 



G. lucasi. 



G. sugdeni. 



G. quadrangulata. 



G. Hetcheri. 



