LIST OF BRITISH LAND AND FRESHWATER MOLLUSCA, 



VALVATID^. 

 VALVATA Mull. 



21 Valvata piscinalis {Mull.). 



b V. depressa C. Pfr. 

 c V. subcylindrica Jeff, 

 d V. acuminata Jeff, 

 e V. pusilla {Mull.), 

 f m. sinistrorsum Jeff. 



22 Valvata cristata Midi. 



LIMN^IDyE. 



PLANORBIS Guettard. 

 Seginentina Flem. 



23 Planorbis lineatus Walker. 



b V. albina Taylo7'. 



Gyraidus Agassiz. 



24 Planorbis nitidus {Mull.). 



b V. albida Nelson. 



25 Planorbis nautileus (Z.). 



b V. crista (Z.). 



26 Planorbis albus Mull. 



b V. Draparnaldi {Shepp.). 



27 Planorbis parvus Say.='?. glaber Jeff. 



b V. ciimpressa Lloyd. 



28 [Planorbis dilatatus Gould.'\ 



Gyrorhis Agassiz. 



29 Planorbis spirorbis Mull. 



b V. ecarinata Jeff, 

 c V. albida Nelsott. 



30 Planorbis vortex (Z. ). 



b v. compressa Mich. 



31 Planorbis carinatus Mull. 



b V. disciformis Jeff. 



32 Planorbis complanatus (Z.). 



(J V. rhombea ( Ticri. ). 



c V. albina Jeff. 



d m. sinistrorsum Taylor-. 



Corettis Adauson. 



33 Planorbis corneus (Z.). 



b V. albinos Afoij. 



Bathyomphalus Agassiz. 



34 Planorbis contortus (Z.). 



b V. albida Jeff 



PHY'^A Lamar cJc. 

 Aplexus Flem. 



35 Physa hypnorum (Z.). 



b V. major C/iarp. 



c m. decollatum Nelson. 



Bulinus Adanson. 



36 Physa fontinalis (Z. ). 



5 V. inflata Moq. 

 c V. curta y^ 

 d V. oblonga y^ 

 e V. albina Jeff, 



LIMN/EA Bruguiere. 

 Amphipeplea Nils. 



37 Limnsea glutinosa (Mull.). 



b V. mucronata y^^. 



Radix Montfort. 



38 Limnfea involuta Thompson. 



39 Limnsea peregra {Mull.). 



b V. Burnetti Alder. 

 c v. lacustr-is {Leach"), 

 d V. lutea {Mont.'), 

 e v. ovata Drap. 

 f v. acuminata y^?/^ 

 g V, intermedia Zi?r. 

 /^ V. oblonga Jeff, 

 i V. labiosa Jeff, 

 j V. picta Jeff, 

 k V. maritima y^^ 

 / V. lineata Bean, 

 7n V. Candida Porro. 

 71 V. succineseformis Jeff, 

 m. sinistrorsum Jeff 

 p m. scalariforme y^^ 

 q m . decollatum y^. 



40 Limnsea auricularia (Z.). 



(5 V. magna Colb, 

 c V. minor Moq. 

 d V. acuta Jeff, 

 e V. ampla {Hartm.). 

 f V. reflexa Nelson, 

 g V. albida Jeff. 



Limnophysa Fitzinger. 



41 Limngea stagnalis (Z.). 



b V. fragilis (Z.). 

 (? V. labiata Jeff, 

 d V. roseolabiata Slu7-m. 

 e V. albida y^^ 

 / m. sinistrorsum y^ 



42 Limnsea palustris (ALull.). - 



b V. corvus (Gmel.). 

 c V. minor Taylor, 

 d V. elongata Moq. 

 e V. conica y^^ 

 / V. tincta Jeff 

 §' V. lacunosa Zgl. 

 h V. fasciata Nelson. 

 i V. roseolabiata Jeff, 

 j V. albida Nelson, 

 k m. decollatum y^. 



43 Limnsea truncatula {Mull,). 



b V. major Moq. 

 c V. minor Moq. 

 d V. ventricosa 71/(7^. 

 e v. elegans y^^fi 

 y V. microstoma Drouet, 



J.C, iv., April, 18S3 



