96 CATALOGUE OF 



water ; also they show greater development of the umbo. The 

 most oval examples (PI. XXIV, f. 1) are from Blythburgh. 



The specimen figured by Forbes & Hanley (63, pi. xxxvii, f . 1 1 ) 

 is one of those in the British Museum Collection (1907.12.30: 

 159-61). 



DISTRIBUTION. 



si 

 01 



NS CA 

 HB 38 



RW RE EL BF AN 



Wl El PN AS 



AM PM FF Kl 



M DN SG PC KF 



1 CT ' RF LL ED HO 



AY LA PE BW NN 



WD ED LD AN WT KB DF SK RX SN 



FE TY AR DO CU WL NY DM 

 WM 8L LE MO ^ 



EM RO CV LH A SL WY 8Y L 



WG N6 LF WH ME CR DB FT CH DY NM L8 



SB KC KD DU MN M6 SP ST LR CB WN EM 



CL NT QC CW Wl CD RA HF WO WW NO HU * ES 



NK LK 8T KK WX PB CM BR 6E OX BX BD HT NE 



SK MC EC WA 6M MM 6W NW BK MX SE 

 WC NS SW NH SR_-WK E* 



L ND 88 DT SH WX EX 



EC SD IW 



SC WC 



Cl 

 Pisidium liensloivanum. 



(Recent occurrences are shown in red : fossil occurrences by a line 

 below the symbols. For the explanation of the symbols see p. 20.) 



KECENT. 



ENGLAND. 



LONDON. 1L 



Acton [J. E. C.] ; Hampstead [W. M. W.] ; Tottenham [W. M. W.]. 

 BERKSHIRE. BK. 



Eton (R. Thames) [J. E. C.]. 



