1880.] LAND-SHELLS OF MENTON. 129 



Var. PRJSCLARA, nov. (Plate XIII. fig. 7.) 



(An potius P. prcBclara, n. sp. ?) 



This I for some time considered a distinct species ; at any rate 

 it is a well-marked constant variety. It 'was not rare, in deposit 

 B only, and often in such perfect preservation that it looked as if 

 the animal had only just been extracted. 



Spire slightly convex, much like that of var. plagiostoma, but 

 more pupiform — that is, more tumidly swollen, not so attenuately 

 contracted ; whorls 8 to 9, the last two proportionally more swollen 

 and convex, the last not compressed at its base (in this unlike all 

 the preceding) ; very translucid, so much that the columella can be 

 traced sometimes nearly to the apex, smooth, shining, no trace of 

 the oblique sculpture characteristic of the preceding ; the aperture 

 is not unlike that of var. plagiostoma, though less contracted, equally 

 oblong, as broad below as above — that is, with the margins parallel; 

 the parietal fold considerably less vertical than in the type form ; 

 the columellar one similarly straightly transverse ; the palatal ones, 

 as seen through the back of the last whorl, seem to me much the 

 same ; the outer margin is less straight than in any of the pre- 

 ceding forms — that is to say, is more pinched -in at the callous tooth, 

 and is consequently more arcuate above and below ; the columellar 

 one considerably less oblique, above scarcely twisted, at base more 

 gradually rounded. 



Long. 4|, diam. (,vix) 1| millim. 



Type var., Indian Museum, Calcutta ; also in coll. Bourguignat 

 and Coombe Williams. 



Var. GRiMALDiENSis, nov. 



(An potius P. grimaldiensis, sp. nov. 1) 



This form, I believe, will eventually prove to be distinct from its 

 allies found on the other side of the headland, as is the case with 

 species of Clausilia and Pomatias ; as, however, I only found, in 

 deposit D, a single specimen (the preceding forms not being found 

 there at all), I do not feel justified, at present, in describing it as a 

 distinct species. 



A short, tumid, pupiform variety, with only 7 whorls, more con- 

 vex and increasing more rapidly than in any of the preceding, the 

 last one perfectly rounded at base ; the aperture much shorter and 

 less contracted, with much less conspicuous folds, which are further 

 within ; the columellar margin more broadly reflected, but less 

 callous, without any twist or deflection whatever, scarcely oblique, 

 almost rounded at base; outer margin with its well- developed 

 tooth, as in the type form. 



Long. 4, diam. If millim. 



Unique type var., Indian Museum, Calcutta. 



Pupa (Sphyraditjm) jolyana, n. sp. (Plate XIII. fig. 8.) 

 Testa profunda et late umbilicata, regulariter cylindrico-ovata, ob- 

 tusa, sericina, cornea; confertim plus minusve oblique costulata, 

 Proc. Zool. Soc— 1880, No. IX. 9 



