RORlJUCt-: MKMORJAI. NOMBEk. 



1S5 



ENGLAND. 





Thames. 



Ouse. 







NAMii OF SrRcircs. 



1 



East 



Vest 



.South 



North 



rd 



sex 



ire 



i 



■3 S « li c : 



;3 ^ ;.j c:: ^, ^ Q. 



•-*>, o'"-G'ri- 



^ -^ ^ ^ n i;^ — rt 







fccn't:^ E^ - ^ 



RecorJs m italirs require 



^!ii!J^aMSS«dM 



cAicn;2;;<50»s^ 



confirmalion. 



>0 to t- X 03 — "M CC ■* 



m to 1^ CO 3; --H oi 





j — — ' — ^ — Ol 'M (?) Tl IM 



(M 01 01 Ol C-l CO C^ fC 





15 A9 33 ... 



•?-7 32 



C. cravenensis 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



C. bidentata 



15 16 17 20 ... 22 ... . 



1 32 



C. rolphii 



15 16 17 18 19 20 21 22 23 24 



1 25 26 27 28 29 30 31 32 



Suecineidae 



Succinea putri.s 

 S. elegans 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



lo ... 17 





S. oblonga 



15 16 17 18 19 20 21 22 23 24 



25 ... 27 28 29 30 31 32 



Aurieulidse 



Carychiiiin minimum 



15 16 ... 18 19 



... 16 ... 18 19 



25 ... 



Phytia myosotis 



25 



Ovatella bidentata 



15 16 17 18 19 20 21 22 23 24 



25 ... 27 28 29 30 ... 32 



Ancyljdse 



AncyUis fluviatilis 



... 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



A. lacustris 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



Limnseidae 



Limni^a auricularia 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



L. peregra 

 L. burnetii 

 L. pr38tenuis 

 L. involuta 



15 16 17 is 19 26 21 22 23 24 



25 26 27 28 29 30 31 32 



L. palustris 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



L. truncatula 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



L. stagnalis 



.. 16 19 20 ... 22 



28 



L. glabra 



15 ... 17 22 23 24 



25 ... 27 31 ... 



Amphipeplea ghitinosa 



Planopbidse 

 Planorbis corneus 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



P. albus 



15 ... 17 18 21 ... 23 ... 



27 



P. glaber 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 ... 32 



P. nautileus 

 P. dilatatu.s 



15 ... 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



P. carinatus 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



P. complanatus 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



P. vortex 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



P. leucostoma 





25 26 27 28 29 30 31 32 



Baihyomphahis contortus 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



Mippeutis fontanus 



15 16 17 .. ... 20 21 22 23 ... 



25 26 27 28 29 32 



Segmentina nitida 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



Physidae 



Physa fontinalis 

 P. heterostropha 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 ... 31 32 



Aplexa hypnorum 







Paludestrinidse 



15 16 ... 18 19 





Pakidestrina ventrosa 



15 16 17 18 19 20 21 ... 23 24 



25 29 32 



P. jenkinsi 



15 16 ... 18 19 



25 • 



P. stagnalis 



... 16 



27 



P. confusa 







Amnicola taylori 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



Bithynia tentaculata 



