LAURLE OP WESTERN EUROPE. 83 



obliquely costulate ; the last whorl ascending in front, com- 

 pressed in the middle at the aperture, keeled beneath, one- 

 third as long as the shell. Aperture vertical, semioval, with 

 5 folds: 1st and 2d on the parietal, the 2d rather small, 

 median, deeply placed, (the 1st lateral, curved, much longer 

 and stronger; 3d lamella long, oblique, median on the colu- 

 mella; 4th basal, short, deeply placed; 5th palatal, long. 

 There is a crest-like or doubled tooth in the middle of the 

 right margin. Peristome subreflected, white-lipped. Length 

 3.5, diam. 2.2 mm. (Bet.). 



Asia Minor: Samsun (Retowski). 



Pupa (Lauria) pontica Retowski, Bericht Senckenb. nat. 

 Ges., 1889, p. 253. 



By the close costulation this remarkable new species recalls 

 ilic Tscherkessic P. pulchra Ret., with which it cannot be con- 

 fused, being sharply distinguished by various characters. P. 

 pulchra is only perforate, the last whorl margined below, 

 without trace of a keel ; P. pontica has a deep umbilicus, and 

 the last whorl is distinctly keeled below. Moreover, the arma- 

 ture of the mouth is quite different. In pulchra there are two 

 folds on the columellar margin, in pontica only one, but the 

 latter has a small, deeply placed little fold in the base, oppo- 

 site the parietal wall, which is wholly wanting in pulchra. 

 The plate-like dilation of the inner right margin of the peri- 

 stome appears to be variable, as in one of my examples it has 

 exactly the form of my specimens of pulchra, but in the others 

 has the form of a strong double tooth. Between the spiral 

 [columellar] and the palatal lamella? the peristome is quite 

 smooth in P. pontica, while in P. pulchra there are five small 

 fold-like denticles (Bet.). 



Species of Western Europe. 

 All belong to the restricted section Leiostyla. 

 22. Laueia anglica (Wood). PI. 5, figs. 9, 10, 11, 12. 



The shell is shortly rimate, lengthened-ovate, chestnut- 

 lirown above the periphery, transparent olive-buff below ; 

 finely, rather weakly striate. The spire is convexly conic, 



