W. D. ROEBUCK : LINCOLNSHIRE MOLLUSCA. 



267 



Planorbis complanatus var. rhombea (Turt.). 



North Lincolnshire. — Sutton-oa-the-Sea, in drift at high-water mark, one or two 

 seat : (B. S. Dodd, 4, xii, 86). 



Planorbis corneus (L.). 



Found in several places about Louth, Alford, and Sutton, also 

 at Scotton Common, and in the South near Lincoln and Crowland. 

 North Lincolnshire,- — Scotton Common, 1876, G. Taylor 1 (Coll. AV. Nelson). 

 Theddlethorpe, one 1 (H. W. Kew, April 1887). Sutton-on-Sea, in drift at 

 high-water mark, one, juv. 1 fB. S. Dodd, 4, xii, 86). The Park, Bilsby, 

 near Alford, one, bleached. May 5th, 1886 1 (J. E. Mason). Grainthorpe, 

 near Louth, one 1 (Miss Longley, per H. W. Kew, 16, iv, 87). 

 South Lincolnshire. — Rejectamenta from between Bracebridge and Lincoln, 

 December 1884, half-grown I (C. T. Musson). Near Lincoln ! (J. Hardy, sen., 

 September 1885). Crowland Wash, July 1886 ! (T. W. Bell). 



Planorbis corneus var. albinos Moq. 



South Lincolnshire. — Near Lincoln! (J. Hardy, September 1885). 



Planorbis contortus (L.). 



Recorded for various localities near Wroot, Sutton, Chapel, and 

 Donington, and in the Southern division near Lincoln. 



North Lincolnshire. — Rejectamenta of Main Drain, Chapel, one, August 20th, 

 1886: (J. E. Mason). Black Bank Drain at Candy Hall Bridge, April 14th, 

 1883 1 (W.D.R.). Sutton, one! (H. W. Kew, 16, iv, 87). Ditches impreg- 

 nated with iron, Sampson's Lane, near Wroot, common, April 14th, 1S83I 

 (W.D.R. ). Sutton-on-Sea, drift at high-water mark, two! (B. S. Dodd, 

 4, xii, 86). By-wash of river Bain at Donington, two I (H. W. Kew, 7, vi, 87). 



South Lincolnshire. — Rejectamenta from between Bracebridge and Lincoln, 

 December 1884 (C. T. Musson). 



Physa hypaorum (L.). 



Locally distributed, and recorded only for a couple of localities, 

 both in the Northern division. 



North Lincolnshire — Thomas Ball recorded its being taken near Brigg (Science 

 Gossip. January 1868, p. 17). Ditch near Hallington Beck, numerous ! 

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



Physa fontinalis (L.). 

 Plentifully distributed about AVroot, Louth, Sutton, Alford, and 

 Cleethorpes, all in North Lincolnshire, and on record for Lincoln in 

 the Southern division. 



North Lincolnshire. — Sutton -in-the-Mar^h, a few in the coast drains, land-foot of 

 sandhills! April i6th, 1886 (W.D.R. ). Monk's Dyke, Louth, several, April 

 15th, 1886! (W.D.R.). Sloothby, near Alford, a few, juv., August 4th, 

 1886 ! (J. E. ^Lason). The Park, Bilsby, near Alford, May 5th, 1886 ! 

 (J. E. :\Iason). Gravel Drain, near Wroot, two, April 14th, 1883 ! (W.D.R.). 

 Ditches, Sampson's Lane, common, April I4t:h, 1883 ! also common in other 

 ditches there impregnated with iron, April 14th, 1883 I (W.D.R.). Rejecta- 

 menta of Main Drain, Chapel, August 20th, 1886, one, juv.! (J. E. Mason). 

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

 Theddlethorpe, a few! (H. W. Kew, April, 1887). Black Bank Drain at 

 Candy Hall Bridge, common, April 14th, 1883! (W.D.R.). Cleethorpes! 

 H. W. Kew, April 1887). Farlesthorpe, one. May 25th, 1887 ! (J. E. Mason). 



South Lincolnshire. — Rejectamenta from between Bracebridge and Lincoln, 

 December 1884! (C. T. Musson). 



Sept. 1887. 



