ROEBUCK MEMORIAL NUMBER. 



ENGLAND. 



Thames. 



in 7^ 



o ii j= -o 



W ^ >, 

 --. *j <Li 



1.^ to t^ V3 Ci o — C-l fO tH 



Ouse. 









in CO r^ 00 35 o -^ (M 



fM Cl (M OI (N CO CO fC 



Name of Species. 



Records in italics require 

 confirmation. 









Testaeellidse 



0^ oo 









15 16 17 18 ... 20 21 22 23 24 



25 ... 27 28 29 .. 31 



32 



T. haliotidea 



15 16 17 18 ... 20 21 22 23 24 



27 28 



32 



T. scutulum 



Limacidae 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



Limax maximus 



15 ... 17 IS ... 20 .. 22 23 24' 







L. cinereoniger 

 L. tenellus 



15 ... 17 IS ... 20 23 24 





15 16 17 20 21 22 23 24 



25 ... 27 ... 29 30 31 



32 



L. flavus 



15 ... 17 IS ... 20 ... 22 23 24 



25 26 27 28 ... .30 31 



32 



L. arborum 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



Agriolimax agrestis 



15 16 17 ... 19 20 21 22 23 24 



25 ... 27 ... 29 ... 31 



32 



A. laevis 



15 16 17 20 21 22 23 ,. 



25 ... 27 28 29 30 31 



32 



Milax sowerbyi 



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



25 ... 27 28 



32 



M. gagates 



Zonitidae 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



Vitrina pellucida 

 V. pyrenaica 

 Hyalinia crystallina 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



21 ... 23 ... 



25 ... ... 28 29 



32 



H. lucida 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



H. cellaria 



15 16 17 18 19 20 21 22 23 24 



25 26 27 ... 29 30 31 



32 

 32 



H. rogersi 



15 16 17 18 ... 20 21 22 23 24 



25 26 27 28 29 30 31 



H. alliaria 



15 16 17 18 19 20 21 22 23 24 



25 26 27 2S 29 30 31 



32 



H. nitidula 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



H. pura 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 .30 31 



32 



H. ladiatula 



15 16 17 IS 19 20 21 22 23 24 



25 26 27 ... 29 30 31 



32 



Euconulus fulvus 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



Zonitoides nitidus 



15 ... 17 20 .. 22 23 24 







Z, excavatus 



Arionidae 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 32 



Arion ater 



15 16 17 20 21 22 23 24 



30 31 



32 



A. subfuscus 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



A. minimus 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



A. hortensis 



15 16 17 18 ... 20 21 22 23 ... 



25 ... 27 28 29 30 31 



32 



A. circumscriptus 

 Geomalacus maculosus 

 Helieidse 









15 16 17 IS 19 20 21 22 23 24 



25 26 27 ... 29 30 31 



32 



Punctum pygmiTeiim 



15 ... 17 20 ... 22 23 ... 



... 30 ... 



32 



Pyramidula rupestris 



15 16 17 18 19 20 2] 22 23 24 



25 26 27 28 29 30 31 



32 



P. rotundata 



15 







Eulota frulicum 

 Helicella virgata 



15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



15 16 17 ... 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



H. itala 



18 19 22 23 24 



25 26 27 28 29 30 ... 



32 



H. caperala agg. 



15 16 17 ... 19 20 21 22 



31 





H. caperata seg. 



15 16 17 20 21 22 23 24 



25 .. 27 ... 29 30 31 



32 



H. heripensis 



... 16 







H. neglecta 

 Trochula elegans 

 Cochlicella barbaia 

 Theba cantiana 



15 









15 16 17 18 19 20 21 22 23 24 



25 26 27 28 29 30 31 



32 



