THE CARNIVOROUS SLUGS OF SOUTH AFRICA. 215 



the peripodial groove, but separated from it by a narrow row 

 of riigfe. 



Body mottled with greyish-brown pigment, excepting along 

 the edges of the keels. The colour tends to be more concen- 

 trated towards the hind end, and along the sides of the 

 animal just below the upper keels, although it extends down 

 to the peripodial groove. Asa rule, minute reddish-brown 

 specks are also thickly scattered over the body, and these, 

 unlike the greyer patches of colour, occur also on the foot- 

 sole, though much less abundantly than on the back. The 

 ground-colour of specimens preserved in spirit is yellowish- 

 white, very slightly tinged with dull red dorsally ; but in life 

 the skin is more deeply stained with dull red pigment, the 

 general colour of the living animal being usually chestnut or 

 reddish-brown, paler on the keels and f.oot.^ 



The following are the dimensions (in alcohol) of a small 

 but mature specimen, whose reproductive organs are shown 

 in PI. XXIII, fig. 149, of a slightly larger example in which 

 the genital system is not quite fully developed, and of an 

 unusually large specimen in the Natal Museum, of which Mr. 

 Burnup has kindly given me the measurements. 



mm. mm. mm. 



Length ...... 



Breadth between upper keels in 



middle ...... 



Breadth between upper keels at 



respiratory opening 

 Breadth between lower keels in 



middle ...... 



Breadth of foot- sole 

 Greatest height (in middle) 

 Distance from respiratory opening 



to hind end 11-5 .13 .16 



Internal Characters. — Skin thick, especially towards the 

 hind end. Shell (PI. XIII, figs. 50, 51) 4x2 mm., of 



' For a description of the living animal, see ' Ann. Natal Mus.,' 

 1910, vol. ii, pp. 166, 167. 



