CONCORDANCE. 295 



Pupilla Drapernaudii = Pupa umbilicata...Pupilla mavginata — Pupa 



muscorum. 

 Vertigo palustris (pi, 8, f. 10) — Pupa antivertigo...V.vulgaris — P-pyg- 



ma3a...V. heterostropha — P. Venetzii (probably). 

 Carychium minimum — C. minimum. 

 Jaminia bidentata — Conovulus bidentatus. 

 Alexia denticulata — Conovulus denticulatus. 



Stagnieola octanfracta — Limnseus glaber...S. communis — L. palustris. 

 ...S. minuta — L. truncatulus...S. elegans — L. stagnalis var. fragilis. 

 ...S. vulgaris — L. stagnalis. 

 Gulnaria peregra — Limnseus pereger...G. lacustris — L. Burnetti, or 



pereger, var....G. auricularia — L. auricularius. 

 Myxas Miilleri — Limnseus glutinosus. 

 Physa fontinalis — P. fontinalis. 

 Nauta hyimorum — Physa hypnorum. 



Planorbis corneus — P. corneus...P. albus — P. albus...P. carinatus — 

 P. carinatus... P. marginatus, P. Sheppardi — P. marginatus...P. im- 

 bricatus — P. nautileus...P. contortus — P. contortus...P. vortex — 

 P. vortex... P. spirorbis — P. spirorbis. 

 Hcmitlialamus nitidus — Planorbis lacustris. 

 Ancylus lacustris — A. oblongus...A. fluviatilis — A. fluviatilis. 

 lodes angulatus — lantbina communis. ..lodes Norrisii — I. ? (no 



desc.) 

 Cyprtea Europfea — C. Europcea. 

 Simia Pennantiana — Ovula patula. 

 Marginella Anglica — M. Icevis. 

 Actfeon tornatilis — Tornatella fasciata. 

 Ocincbra erinaceus — Murex erinaceus. 

 Purpura lapillus — P. lapillus. 

 Hima minuta — Nassa incrassata...H. reticulata — N. reticulata... H. 



laevigata (pi. 10, f . 1) — Planaxis Brasiliensis (exotic). 

 Buccinum Puxleianum — B, Humphreysianum ?...B. undatum — B. 

 undatum...B. antiquum — Fusus antiquus ... B. corneum — F. 

 Islandicus...B. Bamffium — Trophon clathratus...B. turricula — 

 Mangelia turricula. 

 Fusus muricatus — Trophon muricatus... F. asperrimus — Mangelia 



purpurea, var. asperrima. 

 Mangelia gracilis — M. gracilis. ..M. purpurea — M. purpurea. ..M. ele- 

 gans — M. linearis... M. Cranchiana — M. linearis 1 ? var....M. Pen- 

 nantiana — M. costata...M. Goodalliana — M. striolata...M. lineata 

 (pi. 10, f. 2) — M. multilineata (exotic). ..M. minima — Lachesis 

 minima. 

 Bela nebula — Mangelia nebula, var. laevigata... B. rufa — M. rufa, or 

 var. last...B. Cranchiana — M. rufa var. (probably)... B. minima — 



