186 LIMACID^E. 



Section IBYCUS, Heynemann, 1862. 



Median tooth of the radula with a rounded point (PI. 44, fig. 

 4). Shell swollen, convex, of horny leathery texture, shining, 

 transparent. 



Section AGRIOLTMAX, Malm, 1870. 



Animal shortly carinate behind. Central tooth of radula 

 three-pointed, laterals two-pointed. Eggs orbicular. 



The progressive school of malacologists regards Agriolimax 

 as a genus, distinguishing Malacolimax, Malm, as a subgenus, 

 with utterly unimportant characters. I do not think that this 

 section is well-founded, but retain it as convenient for grouping 

 the species. 



Section PARALLAX, Bottger, 1883. 



Differs from Limax in the respiratory orifice, being on the 

 anterior right margin of the shield. 



Section CLYTROPELTA, Heynemann, 1867. 

 Shell plate mytiliform. 



Section KRYNICKTA, Kal., 1839 (Hydrolimax, Malm). 



Shield very large, only adhering posteriorly, body slender, 

 respiratory orifice at the posterior right margin of the mantle. 

 Limax brunneus, Drap. 



As originally described, species of other groups were included; 

 subsequently the name was changed by the author to Krynickil- 

 lus, which being objectionable, was restored to Krynickia. 

 Mabille has divided the section into two groups, Malino, Gray, 

 and Malinastrum, characterized b}^ mantle shagreened, and 

 striate respectively. 



Malino, Gray, was founded upon a description and figure given 

 in Morelet's work on the "Mollusks of Portugal;" it may proba- 

 bly be included here. The diagnosis is : " Body slender, obtusely 

 keeled, ending in an acute prism ; head produced ; shield large, 

 anterior, oblique, longitudinally grooved ; front part much pro- 

 duced, concentrically grooved, very contractile, very mobile, and 

 moves rapidly from left to right and vice versa, as the animal 

 walks ; orifice of respiration large, behind the middle of the 

 shield. Shell (quite hidden) not described. Very vivacious ; 

 singularly elongates the head when walking." 



