268 



W. D. ROEBUCK : LINCOLNSHIRE MOLI.USCA. 



Limnaea peregra (Miill.) 

 Abundant, variable, and well-diffused in the neighbourhoods of 

 Wroot, Scotton, Lincoln, Cleethorpes, Louth, Alford, Sutton, and 

 Boston, all in North Lincolnshire; also about Boston, Anwick, 

 and Crowland in South Lincolnshire. 



l^orth Lincolnshire. — Scotton Common ! (Coll. W. Nelson). Stream, Hub- 

 bard's Valley, near Louth ! (H. W. Kew, November 1886). Skirbeck, 

 near Boston, several, September 8th, 1884! (W.D.R.). Farlesthorpe, 

 plentiful, May 25th, 1887 ! (J. E. Mason). Pond by Louth Canal at Louth, 

 one, April 15th, 1886 ! (W.D.R.). Monk's Dyke, Louth, numerous, thickly 

 encrusted, April 15th, 1886 ! (W.D.R.). Louth Canal, numerous, April 15th, 

 1886 ! (W.D.R.). Sutton, a few ! (H. W. Kew, 16, iv, 87). Coast sand- 

 hills, Sutton-in-the-Marsh, plentiful, April i6th, 1886! (W.D.R. ). Foss 

 Dyke, Lincoln ! (W. Nelson). Coast drains, Anderby, near Alford, 

 numerous, April i6th, 1886! (W.D.R.). Coast sandhills, Huttoft, near 

 Alford, numerous, April 16th, 1886 ! (W.D.R.). Gravel Drain, one, April 

 14th, 1883! (W.D.R.). Ditch alongside Black Bank Drain, plentiful, 

 April 14th, 1883! (W.D.R.). Lincoln, numerous! (C. T. Musson). Ditches 

 impregnated with iron, Sampson's Lane, near Wroot, Apri-1 14th, 1883 ! 

 (W.D.R.). Ditches, Sampson's Lane, near Wroot, April 14th, 1883, 

 common in clear water ! (W.D.R.). Black Bank Drain at Candy Hall 

 Bridge, common, April 14th, 1883 ! (W.D.R.). Sutton, a few! (H. W. Kew, 

 April 1887). Sloothby, near Alford, juv. numerous, August 4th, 1886 ! 

 (|. E. Mason). Bradley's Paddock, near Chapel, several, August 16th, 1886 ! 

 (J. E. Mason). The Park, Bilsby, near Alford, a few. May 5th, 1886 ! (J. E. 

 Mason). Pond, Brackenborough ! (H. W. Kew, November 1886). Sutton- 

 on-Sea, drift at high-water mark, numerous ! (B. S. Dodd, December, 1886). 

 Claythorpe, one, July 6th, 1887! (J. E. Mason). Grimoldby, one, typical! 

 (H. W. Kew, 13, V, 87). 



South Lincolnshire.— Near Boston, numerous, September 8th, 1884! (W.D.R.). 

 Crowland Wash, July 1886 ! (T. W. Bell). Anwick, near Sleaford, rejecta- 

 menta of dykes, several, March 7th, 1887 ! (Chas. T. Musson). 



Limnaea peregra var. ovata Drap. 



North Lincolnshire —The Park, Bilsby, near Alford, a few, May 5th, 1886! 

 (J. E. Mason). Cleethorpes, numerous ! (H. W. Kew, 16, iv, 87). Theddle- 

 thorpe, a few! (H. W. Kew, 16, iv, 87). Charles Street Brick-field, Louth, 

 two! (H. W. Kew, 13, v, 87). Belleau Springs, near Alford, two ! (Id.). 

 Welton Vale, near Louth, one, somewhat distorted ! (Id.). Benniworih 

 Haven, near Louth ! (H. W. Kew, 7, vi, 87). 



Limnsea auricularia (L.). 



Recorded for Lincoln in the Southern division, and in two 

 localities only in North Lincolnshire. jt 

 North Lincolnshire.— Sutton-on-Sea, one, juv., in drift at high-water mark ! 



(B. S. Dodd, December 1886). Louth Canal, two ! (H. W. Kew. 13, v, 87). 

 South Lincolnshire. — Rejectamenta from between Lincoln and Bracebridge, 



December 1884! (C. T. Musson). Foss Dyke, Lincoln! (W. Nelson's 



collection). 



Limnaea stagnalis (L.). 



A not uncommon species in the vicinity of Wroot, Louth, Alford, 

 Sutton, Owston, Scotton, and Lincoln, all in the North. Our only 

 record for the South is for Crowland. 



North Lincolnshire — Monk's Dyke, Louth, very abundant, thickly encrusted, 

 April 15th, 1886 ! (W.D.R.). Haxey! (Geo. Taylor). Pond, North Somer- 

 cotes Warren, several, small ! (H. W. Kew, April 1887). Warp drains near 

 Owston ! (J. Whitwham). Near Scotton Common ! (Joseph W hitwham). 



Naturalist, 



