25 



Clausilia (Pirostoraa) perversa, Pult (a mgosa, 



Drap.). Ingleby (heenhow (J. H.), Kildale (J. H.), 

 Great Ay ton (B. R. L.), Ingleby Aniclifife (J. H.), 

 Wilton (T. A. L.), Kilton (B. H.), Saltburn (B. H ), 

 Staitlies (B. H.). Very common. 



Cochlieopa lubrica. Mull. Ingleby Greenhow (J. H.), 

 Kildale (J. H.), Great Ayton (B. R, L.), Ingleby Arn- 

 clitfe (J. H.), Middlesbrough (T. A. L.), Kilton (B. H.), 

 Wilton (T. A. L.), Saltburn (B. H.), Tocketts (B R. L.), 

 Staitlies (B. H.). 



Azeca tridens, Pult. Ingleby Greenhow (J. H.), Kildale 

 (J. H.), Ingleby Arncliffe (J. H.), Kilton (B. H), Salt- 

 burn (T. A. I..), Tocketts Wood (B. R, L.), Staithes 

 (B. H.) 



Csecilioides aeicula, Mull, Dixon and Watson say : — 

 " After a considerable flood we once found them in great 

 abundance amongst the rejectment of the River Tees, 

 near Middlesbrough, whither they had been brought 

 from the banks of the stream higher Tip." It is very 

 curious indeed that the species should have been found 

 " in great abundance " under such circumstances. 



Suceinea putris, L. Kildale (J. H.), Great Ayton (T. A. L.). 



SuCCinea elegrans. Risso. Ingleby Greenhow (J. H.), 

 Great Ayton (B. R. L ), Stokesley (J. H.), Glaisdale 

 (T. A. L.), Mulgrave (W. D. R.), Kirkleatham (B. R. L.). 



Carychium minimum, Midi. Ingleby Greenhow (J. H.), 

 Kildale (J. H.), Ingleby Arncliffe (J. H.), Ormesby 

 (T. A. L ), Wilton (T. A. L.), Kilton (B. H.), Saltburn 

 ^B. H ). Very common. 



Alexia myOSOtis, Drap. {A. denticulata, Mont.). Middles- 

 brough (Dixon and Watson). 



Leuconia bidentata, Mont. Tees Mouth (D. F.). 



Otina Otis, Turton. Redcar, " occasionally found on AVest 

 Scar" (D. F.). 



Ancylus (Ancylastrum) fluviatilis. Mull. Ingleby 



Greenhow (J. H.), Stoke.sley (T. A. L.), Guisbrough 

 (T. A. L.), Acklam (T. A. L ), Tocketts (B R. L.), 

 Staithes (B. H.), Lealholm Bridge (B. R L.). 

 Ancylus (Velletia) lacustris, L. Tienholme Bar (J. H.), 



Great Ayton (T. A. L.), Stokesley (B. R. L), Linthorpe 

 (B. R. L.). 



