iS6 



JOURNAL OF CONCHOI.OGY, VOL. l6, NO. 6, JU.NE, I92I. 



Namk of Species. 



Records in italics require 

 confirmation. 



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ENGLAND. 

















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Channel. 















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B. leachii ... 



Viviparidae 



Faludina contecta 

 P. vivipara.. 



Valvatidae 

 Valvata piscinalis 

 V. macrostoma 

 V. cristata ... 



Assemaniidse 

 Assemania grayana 



Pomatiidse 

 Cyclostoma elegaiis 



Aeieulidse 

 Acme lineata 



Neritidae 

 Nerilina fluviatilis 

 Dreissenidse 

 Dreissena polymorpha 



Unionidae 

 Unio pictorum 

 U. tumidus... 



Maig. margaritifera 

 Anodonta cygnea 



A. anatina ... 



Pseudanodonta sp. 

 Cyrenidae 



Sphserium rivicola 



S. corneum 



S. lacustre ... 



S. pallidum 



Pisidium amnicum 



P. casertanum 



P. henslo.wanum 



P. hibernicum 



P. lilljeborgi 



P. milium ... 



P. nitidum... 



P. obtusale 



P. parvulum 



P. personalum 



P. pulchellum 



P. subtruncatum 



P. supinum 



P. tenuilineatum 



Total species 163 



1 ... 



3 



3 4 .. 

 '3 "... "... 



3 4 



.. 4 



S ... 



3 . 



12 3... 

 12 3 4 



.. 6 



5 6 

 '.'.. 6 



5 6 



,.. 6 



5 6 



... 6 







3 





... 6 

 ... 6 





•T 



3 



4 .. 











3 



4 .. 



... 6 







3 



4 .. 



... 6 







- 





... 6 









3 



4 .. 



5 6 











3 



4 .. 



5 6 



3 4 ... 



5 6 



5 6 



... 6 



... 6 







3 



4 .. 



5 6 







... 1 2 3 



4 .. 



... 6 







... 1 





... 6 







"... "... "... "3 



4 .. 



"5 "e 







2 3 



'4 .. 



. 6 6 

 ... 6 



11 12 



11 ... 



14 



12 13 



7 



8 



9 10 11 



12 



13 14 

 .. 14 





8 



9 .. 11 



12 



13 14 



/ 



8 



9 10 11 



12 



13 14 



7 



8 



9 ... 11 





13 14 





8 

 8 









7 



9 ." 



12 



13 ... 



7 



8 



9 







7 



8 



9 10 ii 



12 



13 14 



7 



8 

 8 



11 





13 14 



7 



9 







7 8 9 10 11 12 13 14 

 7 8 9 10 11 12 13 14 



7 8 

 7 8 

 7 8 



9 .. 11 . 

 .. 10 11 . 

 .. .. 11 . 



. 13 14 

 . 13 14 

 . ... 14 



:: ■■ ■;■ "■ ::: ;.. 



7 8 

 7 8 

 7 8 



9 10 ... . 

 ... 10 11 

 11 . 



. 13 14 

 . 13 14 



. 13 14 



... 8 



"7 "s 



11 . 



... 10 ... . 

 9 ... 11 . 



. 13 ... 



14 



.. 13 14 



eC t- i rH 1-1 00 ^2 



t^ m-^THorneoeooooc^osoeooo 



<Xi CMC-Oi-IOS<MOO.-I t-lfHOSt-1-IOO.Hr-l 



