96 EOCENE MOLLUSCA. 



No. 48. Limn^ea minima. Sowerby. Tab. XIV, fig. 9 a — c. 



LYMNiEA minima. Sow. 1817. Mia. Con. vol. ii, p. 156, t. 169, fig. 1. 



L. testa minima, ovato-elonyatd, lavi ; anfractibus quinque aut sex, convexiusculis : 

 aperturd ovali, spirant in lonyitudinem vix csquanti ; maryine columellari reflexo ; plica sub- 

 recta, rotundatd, parum eminenti. 



It is not unlikely that this, as Mr. Sowerby has suggested, may be the young shell 

 of some species already described, probably of L. arenularia, to which, in its regularly 

 taper spire and rounded fold, it presents a close approximation. It is a very small, 

 smooth, elongated, ovate shell, with five or six rather convex volutions, separated by a 

 moderately deep suture : the aperture is ovate, and rather less than half the length of the 

 entire shell ; the inner lip is strongly reflected, and the fold is round, nearly straight, 

 and very little prominent. 



The figures are taken from the original specimen described by Mr. Sowerby in 

 ' Mineral Conchology.' 



Size. — Axis, 3-lOths of an inch nearly; diameter, 2-10ths nearly. 



Locality. — Headon Hill. 



No. 49. Limn^a recta. F. LJ. Fdtvards. Tab. XIV, fig. 7 a — b. 



L. testa ovato-ventricosd, sub-turritd ; spird mediocri, apice acuto ; anfractibus sex 

 aut septem, convexis : aperturd ovali, ampld, antice dilatatd, lonyiori quam spira; maryine 

 columellari sub-rejlexo ; plied parvd, vix tortuosd, parum eminenti. 



The convexity of the whorls, the pointed spire, and the nearly straight rounded 

 fold, distinguish this from every other fossil species. It is a short ovate shell, with a 

 moderately elevated spire, and an acute apex ; volutions six or seven, very convex, the 

 last one rather ventricose : the aperture large, of a roundedly ovate form, effuse in 

 front, and longer than the spire ; the inner lip slightly reflected, and the small rounded 

 fold nearly straight, and scarcely impinging upon the aperture. 



This shell much resembles L. ovum (Brogn.); but the volutions are fewer and more 

 ventricose, and the aperture is more effuse. It does not appear to me to be referable 

 to any other species ; and I have therefore, although reluctantly, described it as a 

 distinct species. 



Size. — Axis, 1 inch and l-10th; diameter, 5-10ths of an inch. 



Locality. — Headon Hill. 



