VERTIGO. 159 



purple ; there is not the least trace of a lower pair of tentacles ; 

 eyes roundish oval, seated on the bulbs or points of the ten- 

 tacles, towards the front ; foot thick, greyish-white, three or 

 four times as long as broad, squarish or nearly truncated in 

 front, and gradually narrowing behind to a blunt point ; it is 

 nearly the length of the shell ; sole very flexible, especially at 

 the edges ; pulmonary orifice small." — Jeffreys, 'Annals and 

 Magazine of Nat. Hist.' for November, 1878. 



Shell tumidly oval, thin, glossy, almost transparent, pale 

 yellowish or brownish horn-colour, indistinctly striate in the 

 line of growth ; periphery rounded ; epidermis very thin ; 

 whorls 4i, exceedingly ventricose, abruptly increasing, body 

 whorl exceeding in size the rest of the shell ; spire short, apex 

 very obtuse ; suture very deep ; mouth forming about two- 

 thirds of an oval, with a slight sinuosity towards the centre of 

 the outer edge, with four or five teeth, one on the centre of 

 the base of the penultimate whorl, one on the pillar, and two 

 (the lower one of which is slightly the most prominent) on 

 the inside of the outer Hp ; the fifth tooth, when present, is 

 placed a little below the one on the pillar ; outer lip whitish, 

 somewhat thin, reflected, and strengthened by a moderately 

 broad rib, which is placed at a short distance from the aper- 

 ture ; inner lip very indistinctly spread on the base of the 

 penultimate whorl ; umbilicus rather more distinct than in 

 V. antivertigo. 



Inhabits marshes, on reeds, &c. This interesting 

 species was recently discovered for the first time in 

 England by Mr. Groves in two localities, one in Hamp- 

 shire and the other in the neighbourhood of Hitchin ; 

 and a short time since, when on an excursion in 

 company with Dr. Gwyn Jeffreys and myself, he was 

 again fortunate in first finding it in another locality in 

 Hertfordshire. 



Dr. Gwyn Jeffreys is now of opinion that the species 

 which he discovered some years ago in Ireland, and 

 described in * British Conchology ' as V. Motdinsiaiia 



