294 CONCORDANCE. 



The following Concordance of Leach's nomenclature, 

 is drawn up almost entirely from the synonymy ; the 

 descriptions being utterly insufficient for the determina- 

 tion of species. The naked mollusks are not included 

 in it. 



Cleantus Montagui (pi. 7, f. 6, 7) = Pleurobranchus plumula. 



Oscanius argentatus — Pleurobranchus membranaceus. 



Aplysia varians — A. hybrida. 



Esmia Griffithsiana (pi. 7, f. 8, 9, 10) — Aplysia hybrida junior? 



Marsenia producta — Lamellaria perspicua...M. complanata — L, ten- 

 taculata. 



Bullpea Planciana — Philine aperta...B. catena — P. catena. 



Scaphander lignarius — S. lignarius...S. catenatus — S. lignarius, var. 

 (from desc.)...S. Brownii — ? 



Haminsea Cuvieri — Bulla hydatis...H. dilatata — B. hydatis (mon- 

 strous) ?...H. elegans — B. (exotic). 



Eucampe Donovani — Akera bullata. 



Roxania Cranchii (pi. 7, f. 11) — Bulla Cranchii. 



Succinea Mullen — S. putris. 



Vitrina Drapernaldi — V. pellucida. 



Helix aspersa — H. aspersa. 



Tachea nemoralis, T. hortensis — Helix nemoralis. 



Arianta arbustorum — Helix arbustorum. 



Pomatia antiquorum — Helix pomatia. 



Teba cingenda — Helix Pisana...T. virgata — H. virgata...T. Cantiana 

 — H. Cantiana. ..T. Carthusianella (pi. 8, f. 4, 5, 6) — H. Carthusiana. 

 T. rufescens — H. rufescens... T. caperata — H. caperata...T. his- 

 pida — Helix sericea...T. fulva — H. fulva...T. spinulosa — H. 

 aculeata. 



Zonites ericetorum — Helix ericetorum...Z. radiata — H. rotundata...Z. 

 rupestris — H. umbilicata...Z. lucida — Z. cellarius, &C...Z. crys- 

 tallina — Z. crystallinus. 



Cliilotrema lapicida — Helix lapicida. 



Zurama pulchella — Helix pulchella. 



Elismia fasciata — Bulimus acutus. 



Ena montana — Bulimus Laekhamensis...E. obscura — B. obscurus. 



Zua lubrica — Z. lubrica. 



Baltea fragilis — Balea fragilis. 



Clausilia lamellata — C. laminata...C. Rolphii (pi. 8, f. 7) — C. plica- 

 tula... C. biplicata — C. biplicata...C. rugosa — C. nigricans. 



Azeca Matoni (pi. 8, f. 8, 9) — A. tridens. 



Abida seeale — Pupa seeale. 



