LAND AND FRESH WATER MOLLUSCA OF THE EAST RIDING. 131 



Arion circumscriptus Johnst. 



Derwentland — Allerthorpe (Y.N.U. 1893). 



Wolds. — Filey, first ravine south (Y.N.U. 1903). Lowthorpe (Y.N.U. 

 1890). Sledmere (Y.N.U. 1891). North Grimston, common 

 (Y.N.U. 1902). Brough (Y.N.U. 1901). Drewton Dale (T.P.). 



Holderness. — Driffield, banks of canal, "all five species of Arion" 

 (J.D.B. circular 145). Hornsea, woods north of mere ; Bale Wood, 

 Aldborough ; Hedon ; Burstwick ; Humbleton ; Cottingham (T. P.). 



Arion hortensis Fer. 



Derwentland. — York district, abundant beneath logs of wood (R.M.C.). 

 Wolds.— Filev, cliffs (W.C.H. 2nd circular, 1883; Y.N.U. 1883). 



Flambor'ough (F.W.F. circular 116). Danes Dyke (Y.N.U. 1886). 



Sledmere (Y.N.U. 1891). North Grimston, several (Y.N.U. 1902). 



Kildvvick Percy (J.D.B. 3rd circular, 1885; Y.N.U. 1885; J.D.B. 



circular 106). Brough (Y.N.U. 1901). Drewton (T. P.). 



Holderness. — Driffield, banks of canal, "All five species of Arion" 

 (J.D.B. circular 145). Hornsea, common (J.D.B. 2). Beverley, 

 everywhere (J.D.B. 3). Hull district, very common (J.D.B. ij. 

 Common in Holderness (T. P. ). 



Amalia gagates (Drap.). 



Holderness, — Withernsea (J.D.B. circular 99); on the cliffs (J.D.B. 

 Nat. vol. 17, p. 253). 



Amalia sowerbyi Fer. 



Not in the Census. 

 Wolds. — Filey, " in the ravine," (Y.N.U. 1883; Y.N.U. 1903). 

 Holderness. — Hull, " Li max sowerbyi?" in gardens (J.D.B. 1). 



Limax maximus Linn. 



Derwentland. — York district, common (R.M.C.). Newport nr. 

 Staddlethorpe, abundant (T.K. Skipwith, in Taylor, Mon. 2, p. 49). 

 Allerthorpe, \ax. fasciata (Y.N.U. 1893). 



Wolds.— Howsham Woods (Y.N.U. 1889). Kildwick Percy (Y.N.U. 

 1885; circular 106). Flamborough (F.W.F. circular 116). Danes 

 Dyke (Y.N.U. 1886). Lowthorpe (Y.N.U. 1890). Sledmere 

 (Y.N.U. 1891). North Grimston, var. fasciata, plentiful (Y.N.U. 

 1902). 



Holderness. — Driffield, banks of canal (J.D.B. circular 145): in garden 

 (E.P.B.). Beverley (F. Boyes, Nat. 7, p. 171); not common, Long 

 Lane (J.D.B. 3); common in gardens, Westwood (J.D.B. in 

 Taylor, loc. cit.). Hornsea (J.D.B. 1) ; in cellars and outhouses 

 (J.D.B. 2). Withernsea (Y.N.U. 1892). Hull, common in gardens 

 (J.D.B. 1.). In stickheaps, &c, fairly common, Aldborough ; 

 Burstwick ; Hedon ; Kelsey Hill, var. fasciata ; Humbleton (T.P.). 



