162 HULL SCIENTIFIC AND FIELD NATURALISTS' CLUB. 



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

 1903). Flamborough (F.W.F. circular 1 16). Pond near Danes Dyke 

 House (Y.N.U. 1886). North Grimston, one specimen (Y.N.U. 

 1902). Kildwick Percy (Y.N.U. 1S85, circular 106). Brantingham 

 (J.D.B. 1; J.D.B. circular 69; Y.N.U. 1901). South Cave to 

 Brough, a small form in chalk pits (F.W. F. circular 157). Hessle, 

 in a lime quarry, fine (J.D.B. 1). Kelleythorpe (T.P.). Cottam 

 (E.P.B.). 



Holdemess. — Driffield Canal (J.D.B. and L. B, Ross circular 145). 

 Swinemoor; Figham ; Leckonfield Park; Kitchen Lane; on the 

 muddy banks of the R. Hull in countless numbers, generally small 

 (J.D.B. 3). Hornsea, ditch near Mere (J.D.B. 2; Y.N.U. 1881 ; 

 C. Reid, p. 83). Barmston Drain, Hull (J.D.B. 1). Withernsea 

 (Y.N.U. 1892). Pond, roadside between Sutton and Wawne (H. E. 

 Johnson). Hedon ; Sutton; Lambwath stream ; Skeffling: Patring 

 ton ; Kelsey Hill ; &c. ; common everywhere (T. P. ). Everywhere 

 (E.P.B.). 

 Subfossil. Hornsea (H. F. Hall. p. 45). Bridlington (W.C.H. Nat. 

 12, p. 374). 



Limnsea glabra (Mull.). 



It is worthy of notice that this species has been found in 

 every district which has been thoroughly investigated. The 

 Danes Dyke record appears to be an error ; if so it does not 

 occur in the central division. 



Derwentland. — York district, in small ditches but rare (Hincks in Forbes 

 and Hanley, 4, p. 180) ; rare (S.W.N.) ; ponds about York (W.C.H.). 

 Tilmire and Langwith (R.M.C.). Cowbridge, one specimen; 

 Sandholme ; Featherbed Lane ; Wressle (W. Nelson, J. of C. 5, 

 pp. 262-67). 



Wolds. — Flamborough Head, in profusion in a pond where the water is 

 quite red ; this has produced decollation in man)' cases (W.C.H.) ; 

 pond filled up (W.C.H., " Flamborough," p. 137). Abounds in 

 grassy ponds near Danes Dyke (W.C.H. circular 62 : not recorded 

 Y.N.U. 1S86 ; nor in " Flamborough," pp. 135-37). 



Holdemess — Plentiful in a pond near Leconfield Moat with PL spirorbis 

 and a few L. peregra (J.D.B., J. of C. 3, p. 177 ; J.D.B. 3 ; F.W.F. 

 Trans. I. p. 156). Hornsea Mere, one dead shell (C. Reid, p. 83) ; 

 this record has not been confirmed. Hedon, in a closed ditch 

 behind the " Plough Field," with PL spirorbis and Physa hypnorum ; 

 shallow ditch, Livers ; ditch, " Poor Closes," all three within a 

 short distance (T. P. Trans. I. p. 103). Pond near the Preston road, 

 Sproatley, with PL spirorbis (C. Hollingworth). Haltemprice Lane 

 (F.W.F.). Inglemire Lane (J. W. Boult ; F.W.F. Trans. I. p. 

 T56 and T.P. p. 103.) 



Ancylus fluviatilis Mull. 



This species is practically confined to the rapid streams 

 on the slopes of the Wolds, in which the stones are not 

 coated with mud as in the slug-g-ish drains of Holdemess. 



