30 PLIOCENE MOLLUSCA. 



to its specific distinctness, they state it may be distinguished from L. tenuis, S. 

 Woodward (Geol. of Norfolk, tab. iii, fig. 30, 1833), L. palustris, S. V. Wood 

 (Mon. Crag Moll., pt. i, tab. i, fig. 7, 1848), L. jMlustris, Kennard and B. B. 

 Woodward (Proc. Malac. Soc, vol. iii, p. 196, 1899), and L. Pingellii, S. V. Wood, 

 (Mon. Crag Moll., 1st Suppl., tab. iv, fig. 4, 1872), by its more pronounced suture, 

 its more convex whorls and its markedly oval mouth. Though bearing a superficial 

 resemblance to some forms of L. ]jalustris, they consider that in all probability it 

 has no affinity with that species. 



Limnaea pereger (Midler). 



1774. Buccinum peregrum, Miillei', Verm. terr. fluv. Hist., pt. ii, p. 130, no. 324. 

 1848. Limncea pereyra, S. V. Wood, Mon. Crag Mull., pt. i, p. 7, pi. i, fig. 7. 

 1853. Limnieus pereger, Forbes and Hauley, Brit. Moll., vol. iv, p. 165, pi. cxxiii, tigs. 3 — 7. 

 1862. Limniea peregra, Jeffreys, Brit. Couch., vol. i, p. 104, pi. vii, fig. 3. 

 1890. Limniea Hmosa, C. Eeid, Plioc. Dep. Brit., p. 229. 



1896. Limniea pjereger, Stefanescu, Mem. Soc. Geol. France, vol. vi, p. 105, pi. ix, fig. 36. 

 1897-1901. Limncea pereger, Kennard and B. B. Woodward, Essex Nat., vol. x, pp. 93 et seq., 1897 ; 

 Proc. Malac. Soc, vol. iii, p. 195, 1899 ; Proc. Geol. Assoc, vol. xvii, pp. 217 et seq., 1901. 



Specifo Characters. — See Mon. Crag Moll., pt. i, p. 7. 



Dimensions. — L. 18 mm. B. 10 mm. 



Distribution. — Recent ; widely distributed in the British Isles, and abroad 

 from Siberia and Iceland to Sicily ; recorded also from various localities in Asia 

 from Palestine to China, and in Africa from Morocco and Abyssinia (J. W. 

 Taylor). 



Fossil : Butleyan Crag : Hollesle}^ Butley. Icenian : Bramerton, 

 South wold, Bulchamp ; Freshwater bed, West Runton. 



Pliocene : Castell Arquato, near Piacenza. Common in the Pleistocene and 

 Holocene deposits of Great Britain. 



Pleistocene : Roumania. Pleistocene and Holocene of other parts of the 

 Continent, including Denmark and Sweden (Nordmann). 



lieniarhs. — This very common British species was known to Wood only from 

 the Icenian Crag of Bramerton and Southwold. Mr. A. Bell has since found it 

 at Butley and Hollesley, and Messrs. Kennard and B. B. Woodward have reported 

 it from Bulchamp. 



Limnaea Woodi, Kennard and B. B. Woodward. 



1848. Limnsea truncatula, var. 0, S. V. Wood, Mon. Crag Moll., pt. i, p. 8, tab. 1, fig. Sh. 

 1911. LimtiRm Woodi, Kennard and B. B. Woodward, Geol. Mag. [5], vol. viii, p. 44)2. 



Specific Characters. — Shell small, ovato-conical, thin ; spire elevated, little 



