ARION. 239 



margin yellowish, bipartite by a brown line and with brown 

 transverse lineoles, sole iron-color with a livid zone. 



Portugal. 

 Var. MONTANUS, Mabille. Fig. 39. 



Greenish brown, the margin iron-color, with the brown divid- 

 ing line, and transverse lineoles, sole iron-color. 



Section ARIUNCULUS, Lessona, 1881. 



A. ISSELI, Bourg. PL 58, fig. 40. 



Rugose, olivaceous black ; the shield blackish, minutely gran- 

 ulose ; mucous pore small ; margin of foot olivaceous, trans- 

 versely sulcate, but not lineolated ; sole with olivaceous lateral 

 zones, the median whitish. Length (in alcohol), 35-40 mill. 

 No shell-plate. 



Island of Sardinia. 

 A. SPEZI^E, Lessona. PL 59, fig. 48. 



Small, cylindrical, rounded behind, very slightly rugose; 

 shield rather small, gibbose, smooth ; orange-brown, the shield 

 unicolored, the back with a dark stripe on either side ; sole 

 pallid, margin of foot not lineolated ; head blackish. Shell rep- 

 resented by a collection of small white calcareous granules. 



Length (in alcohol), 20 mill. 



Piedmont. 

 A. MORTILLETI, Lessona. PL 58, fig. 41. 



Rugose, ruga? wide, depressed ; shield moderate, not gibbose, 

 granulose, unicolored ; margin of foot not transversely lineo- 

 lated. Length (in alcohol), 20-25 mill. 



Alps of Piedmont. 



The typical form is light yellowish brown, the neck and sides 

 lighter ; the tentacles and posterior margin of the foot blackish. 

 A. flavus, Lessona, is a synonym. 



Yar. AURANTIACUS, Lessona. Back and shield orange-color, 

 with a darker zone on either side ; tentacles black. 



Var. MONACHUS, Lessona. Brownish yellow, the tentacles, sides 

 and margin blackish. 



Yar. PULLATUS, Lessona (var. figured). Blackish, lighter on the 

 sides and in front of the shield. 



