HELIX. M:; 



continued over the parietal wall by a strong callus, much thickened 

 in adult specimens, outer margin provided with two teeth. 



Constantine, Algiers (fossil.) 

 The most bizarre of the "Gruppe der Doppelzahner." 



*** 

 H. CODRINGTONI Gray. PL 38, figs. 72-75. 



Imperforate, subdepressed, solid, coarsely and irregularly striate, 

 decussated with fine spiral lines, white, irregularly marbled and 

 streaked with brown, the markings usually arranged into four or 

 five broken bands ; spire depressed conoidal, apex smooth; whorls 

 5, somewhat convex, the last descending anteriorly; aperture large, 

 very oblique,truncate-oval, peristome slightly expanded bearing a 

 truncate dentiform callus at base ; parietal wall with a light callus 



Diam. 45 mill. 



Greece and Adjacent Islands. 



H. ferussaci Christ, et Jan, and H. spiriplana Desh. are synonyms. 

 Bourguignat has described as species H. eucineta, H. euchromia, and 

 H. eupcecilia; they are not even entitled to varietal rank. H. 

 pseudoparnassia Mousson is also a synonym. 



Var. PARNASSIA Roth. PI. 38. figs. 74, 75. 



. Globose conic, with obtuse apex ; last whorl not widened toward 

 aperture, strongly and abruptly deflected anteriorly; aperture round- 

 oval, slightly thickened at base, distinctly toothed ; extremities of 

 peristome approaching; no parietal callus. Diam. 30 mill. 



Parnassus. 



Var. OET^E Kobelt. 



A form with the depressed and widened body-whorl of typical 

 H. codringtoni, but not larger than var. parnassia. Diam. 36 mill. 



Mi. Ho (the ancient Oeta.) 



Scarcely distinct from the type. 

 Var. AETOLICA Boettger. 



Smaller than the type generally openly rimate; quadrifasciate, 

 the upper bandusually obsolete; spire short, exactly conical; whorls 

 greatly depressed. Diam. 33-34, alt. 18-20 mill. 



Veluchi Mb., Aetolia. 



A white unicolored form is also figured (fig. 73.) The species is 

 like all Maeularw, variable in color pattern and size; and m th 

 Grecian peninsula occupies the place of H. alonensis m the 



