50 Non-Marine Mollusca of Lincolnshtre. 
POMATIAS (=Cyclostoma) elegans Miiller 
This species is of special interest, having been first recorded 
for Lines. in 1678, by Dr. Martin Lister, who stated in his 
Hist. An. Angl., that he found it in Yorkshire, and “also 
at Burwell Woods, in Lincolnshire,” where it was refound 
in 1886 by H. Wallis Kew. This is still the only locality 
for which it has been recorded alive. Dead shells have 
been recorded for six other localities. 
N. “At Burwell Woods. (Martin Lister, Hist. An. Angl., 1678.) 
Grisel Bottom, Burwell Woods, 19-8-1886. HW kK. Well 
Vale, Alford, 12-6-1890., one dead specimen. J BD. (WD R. 
Nat. July, 1190.) Swaby, dead. J BD. (Journ. of Conch. 
October, 1891.) Jericho Plantation, Oxcombe, 4-8.1902. 
dead shells. C S C. Stenigot, near railway tunnel, 
10-5-1904, several dead shells. CSC. Lincoln, Ironstone 
Workings, 1905, dead shells in Limestone Rubble from Ift. 
to 4ft. below the surface. H P. (Nat. August, 1905.) 
S. Little Ponton, 1899. RW. 
— var. ochroleuca Moq-Tand. 
N. Grisel Bottom, Burwell Wood, 1901. CSC. 
NERITINA FLUVIATILIS Linné 
Recorded for a few localities. 
N. *River, Lincoln, 1849. J. Hardy, Sen. *Rejectamenta from 
between Bracebridge and Lineoln, December, 1884. CT M. 
Cadney, 1900. MP. The Trent, Newton Cliff, 1901. CSC. 
Brayford, Lincoln, 1905. Masham. 
— var. trifasciata Colbeau 
N. Cadney, 1900. EA W P. 
DREISSENSIA POLYMORPHA Pallas 
Recorded for a few localities. 
N. {Brigg. TB. River Ancholme, Cadney, 1897. EA WP. 
S. River Witham, Bardney, 21-4-1902. H WK. Grantham Canal, 
12-7-1902. R W. Foss Dyke, Lincoln, 24-5-1894. F W F. 
(Nat. September, 1894.) 
UNIO PICTORUM Linné 
Recorded for a few localities. 
N. (Brigg. TB. *Canal near Louth, 15-4-1886. W DR. Cadney, 
River Ancholme, 1891. E A W P. Bottesford, 1900. M P. 
Scawby Pond, 3-6-1895. FW F. (Nat. August, 1895.) Isle 
of Axholme. A R. 
S. *Rejectamenta from between Bracebridge and _ Lincoln, 
December, 1884. C T M. River Witham, Grantham, 
1902. Mr. J. Hawkins and R W. 
— var. curvirostris Normand 
N. River Trent, Gainsborough, 19-2-1890. Geo. Roberts. (Nat. 
March, 1890.) 
—_ var. compressa Jeffreys 
N. Louth Canal, Alvingham, 1900, abundant near the lock. CSC. 
UNIO TUMIDUS Retzius 
Recorded for few localities only. 
N. {Brigg. TB. Louth Canal, Keddington, 1900, one specimen. 
CSC. River Trent, Gainsborough, 19-2-1890. Geo. Roberts. 
(Nat. March 1890.) Isle of Axholme. A R. 
S. Little Ponton, 12-9-1902. RW. Syston Lake, 1902. FH W. 
—- var. ovalis Montagu 
N, *In nud of wall of Roman Structure at Lincoln, (J, Hardy, sen.) 
