EUROPEAN SPECIES OF VERTIGO. 167 



the aperture, a little produced forward. Length 0.9, diam. 0.6 

 mm. (Mouss.}. Banks of the Araxis river, Transcaucasus. 



Vertigo sinuata MOUSSON, Jouru. de Conchyl. 1873, p. 213, 

 pi. 8, f. 10. Pupa sinuata Mouss., J. de C. 1876, p. 40. PPR., 

 Moiiogr. viii, p. 405. 



If the dimensions are correctly given by Mousson, this 

 must be distinct from V. antivertigo, of which it has been 

 considered a synonym. 



45a. Vertigo reneana Servain. Shell rimate-perforate, 

 ovate-globose, ventricose, corneous, glossy, nearly smooth. 

 Spire convexly oblong, the apex large. Whorls 5, convex, 

 slowly increasing, parted by a deep suture; the last whorl 

 minute, rounded, straight above, crested-tuberculose below, 

 the protuberance joined to the gibbosity preceding the peris- 

 tome; gibbous behind the margin, the swelling paler, strong, 

 transverse, stronger below, and concave in front of the swell- 

 ing below. Aperture ventrical, subtrigonal, narrowed and 

 indistinctly angular below, externally sinuate, 7 plicate, as 

 follows: 3 parietals, of which the median is stronger; 2 colu- 

 mellars, the upper one thicker, and 2 nearly equal palatals, 

 the upper one attaining the margin. Peristome lipped within, 

 somewhat expanded and slightly reflected, the outer margin 

 sinuated within, columellar margins obliquely straightened, 

 margins remote. Length 2y 2 , diam. iy 2 , aperture % x y 2 

 mm. (Servain). 



Spain: drift of the Ebre at Saragossa. Vertigo reneana 

 SERVAIN, Etude Moll. Esp. Port. 1880, p. 126. 



Resembles V. maresi of Algeria in form and size, but it 

 differs by the aperture having 7 teeth and by the characters 

 of the last whorl (Servain). It has not been differentiated 

 satisfactorily from antivertigo. 



46. VERTIGO LILLJEBORGI (Westerlund). 



Shell ventricose, ovate, strongly glossy, very finely striate, 

 chestnut horn-color. Whorls 5, rather rapidly increasing, 

 convex, the last but little higher than the penult, double as 

 high as the next earlier whorl, a little ascending in front. 

 Suture but slightly oblique. Aperture quite piriform, or 

 obliquely cordate, with 1 parietal tooth (sometimes with an- 



