196 LI MAX. 



L. SUBALPINUS, Lessona. 



Large, coarsely, rugose, the rugae strong, carinated ; shield 

 large, cuneate behind, strongly concentrically rugose, the free 

 anterior portion ample, maculated with white and black ; disk 

 thick, zoned with blackish ash-color; carina raised, undulating, 

 about half the length of the dorsum. Length, 6-8 inches. 



Sardinia. 



Distinguished from L'. cinereo-niger by its shield entirely 

 covered with white and black spots. 



Var. TYPUS. Grayish brown, carina whitish, back with three 

 series of white maculations. 



Yar. GAROCELUS, Lessona and Pollonera. Whitish laterally, 

 maculate with black, back blackish, white-zoned, carina 

 short, black, white-spotted ; shield whitish, black-spotted. 

 Length, 2'5 inches. 



Yar. SIMPLEX, Lessona. Like the type, but dorsally unicolored. 



Yar. YERONENSIS, Lessona and Pollonera. Ashy olivaceous, with 

 brown maculations or stripes on back and shield ; sole brown- 

 margined. 



Yar. EPOREDIENSIS, Lessona. Black, the shield covered with 

 small -white spots. Shell-plate calyptraeform, concave, 

 sinistral. 

 I am not able to figure this species. 



L. CORSICUS, Moquin-Tandon. PI. 48, figs. 59, 60. 



Shield finely concentrically rugose, obtusely angulated behind, 

 subgibbose ; dorsal line with three or four series of small rugae ; 

 carina variable, from one-third to half the length of the back, red 

 or orange-colored ; shield unicolored or with rather obscure 

 lighter maculations towards the margin ; never black-spotted ; 

 disk with dark marginal zones. Length, 6-16 inches. 



Corsica, Riviera, Tuscany, etc. 



It is not found at great elevations above the sea, and appears 

 to be principally confined to the vicinity of the coast. It has 

 been confounded with L. Dacampi, man3 r of the varieties of 

 which it simulates in coloration, but may be distinguished by its 

 much finer concentric rugas on the shield, the three or four series 



