LAND PLANAKIANS. 373 



uiucli Hattened beneath, but pretty strongly arched on the 

 dorsal surface, excejDt at the posterior end, whicii was a good 

 deal flattened ; much broader behind than in front. The 

 peripharyngeal aperture (in spirit) is well behind the middle 

 of the ventral surface, and the genital aperture rather nearer 

 to it than to the posterior extremity. The skin is characteris- 

 tically tough and wrinkling, as in the Victorian specimens. 

 The eyes are numerous, arranged as usual at the sides of the 

 head, and all round the anterior extremity. The dorsal sur- 

 face, in life, was of a fairly bi'ight yellow colour, witli a single, 

 very narrow, and somewhat indistinct median brown stripe, 

 and numerous minute and faint dashes of brown all over the 

 yellow ground, especially numerous at the posterior end. 

 The anterior horseshoe-shaped extremity was of the usual 

 burnt-sienna colour. The ventral surface was pale yellow, 

 without spots or stripes. 



Locality. — Norton's Summit, near Adelaide. 



Geoplana Jietcheri, var. adelaidensis, varietas nova. 



The single specimen measured, when fully extended, 

 40 mm. in length by 2 mm. in greatest breadth. Body, 

 when fully extended, long and narrow, strongly arched 

 dorsally, flattened ventrally, tapering more gradually in front 

 than behind. In spirit the posterior extremity becomes 

 conspicuously broader than the anterior ; the peripharyngeal 

 aperture is situate at about the junction of the middle and 

 posterior thirds of the body, while the genital aperture is 

 rather nearer to the posterior end than to the peripharyngeal. 

 The eyes are numerous, arranged as usual at the sides of the 

 head and all round the anterior extremity. 



The ground colour of the dorsal surface in life was pale, 

 waxy yellow, with markings as follows : — In the middle line a 

 very narrow but distinct longitudinal stri[)e of sienna brown ; 

 on each side of this a very much broader band of ground 

 colour, measuring about one-seventh of the total width of 

 the dorsal surface, and flecked with numerous small, irregular, 

 longitudinal dashes of pale sienna ; outside this a rather 

 narrower stripe (but much broader than the median stripe) of 

 dark, rich sienna, with ill-defined margins; then, extending 

 to the margin of the ventral surface on each side, a broad 

 band of ground colour, forming about one-fourth of the 

 total width of the dorsal surface, and flecked with numerous 

 small longitudinal dashes of pale sienna, especially abundant 

 towards the outer margin ; horseshoe-shaped anterior ex- 



