232 HELIX. 



margins subconverging, the right scarcely expanded, basal plane, 

 broadly reflexed, much dilated over the umbilical region. 



Diam. 28, alt. 13 mill. (Pfeiffer). 



Caucasus. 



The original figures of this little-known form are given. 



H. ;EGOPINOIDES von Maltziin, 1884. Unfigured. 



Open umbilicate, depressed or depressed trochiform, solid, irregu- 

 larly striatulate, and under a strong lens minutely granulate ; spire 

 depressed ; whorls 5, first two smooth, the following plane, very dis- 

 tinctly carinated, regularly increasing, the penultimate and last 

 whorls somewhat convex, obtusely angulated, the angle almost eva- 

 nescent toward the aperture ; body- whorl subterete, descending ante- 

 riorly ; aperture very oblique, ovate rounded, in adults scarcely lu- 

 nate, with thickened, subduplicate peristome ; the margins continued 

 by a thick heavy callus, in young specimens aperture distinctly lu- 

 nate, peristome acute, thin, labiate with white a distance within the 

 aperture, margins converging, joined by a thin porcellanous callus ; 

 greenish yellowish brown, sutimil cnriim white. 



Diam. 25-5, alt, 12-13-] mill. 



( '<ipe Sidero, Ins. Crete. 



This species, one of the rarest of the European fauna, has the spire 

 of H. spiriplana, and evidently belongs to this group. From below 

 it has the appearance of an Aegopina. Very few living examples 

 were found, (v. Maltzan). 



Section IX. POMATFA Beck, 1837. 



This section, like the preceding groups of Pentatasnia, is wholly 

 Palsearctic in distribution, and is especially characteristic of south- 

 western Europe and the adjacent portions of Asia. I have no hesi- 

 tation in separating from the section the Australasian and American 

 species which Pfeiffer groups here ; as I believe that their resem- 

 blance to the European types is merely superficial. 



The arrangement of species here adopted is substantially that of 

 Kobelt's Catalogue. 



The large, globular form separates Pomatia from the allied subgen- 

 era; it is subject to but slight modification in the various specie-, 

 which are all, indeed, in general appearance very similar. 



The species of Pomatia frequently exhibit sinistral monstrosities, 

 and scalariform or partially uncoiled specimens are also not infre- 

 quently found. Artificial monstrosities have been produced by in- 

 serting the young Pomatia into the aperture of an empty shell, such 



