94 HELICID^. 



The characters which distinguish 6". elegans from 

 6". piitris are perhaps scarcely decided enough satis- 

 factorily to admit of the two forms being regarded 

 as specifically distinct. On one occasion I observed 

 a matrimonial alliance between them. 



Var. I. mijior. — Shell smaller and thinner, of a reddish- brown 

 colour, with a shorter spire and more expanded mouth. 

 Falmouth, Hammersmith (J. G. J.), B.C. 



Var. 2. ochracea. — Shell smaller and thinner, of a reddish- 

 brown, with a larger spire and smaller mouth. Scarborough 

 (Bean), Newcastle (Alder), Tenby, Tingwall Lake, Zetland, 

 (J. G. J.) ; often mistaken for S. oblonga^ B.C. Southend, Kent, 

 R. R. 



Monst. sinistrorsa. — Shell thicker, ochraceous, spire reversed. 

 I found a single specimen near Eastbourne. M. Baudon states 

 in his ' Monographic des Succinics Frangaises,' that a specimen 

 of this monstrosity had been sent him by M. Fagot from the 

 department Aveiron. 



3. S. oblon'ga,* Draparnaud. Pl. V. 



Body short, shagreened, greyish, or sometimes whitish ; 

 tentacles^ upper pair rather short, tips scarcely swollen, lower 

 pair very short and obtuse at the tips ; foot rather broad, obtusely 

 pointed behind. 



Shell oblong-conic, moderately thin, somewhat glossy, semi- 

 transparent, yellowish or brownish horn-colour, with sometimes 

 a faint tinge of green, with strongish irregular striae in the line 

 of growth ; epiderinis thick ; whorls 3-4, convex ; spi7'e pro- 

 duced, apex obtuse ; suture deep, oblique ; mouth roundish- 

 oval ; outer lip thickish, incurved above. 



Inhabits dry ditches, under stones and at the roots 

 of grass. In this country it is a rare species, and 

 it usually occurs near the sea-coast. It has been 



Oblong. 



