NORTH AMERICAN CONCHOLOGY. 89 



[Dillwyn, Descriptive Catalogue.] 

 Vol. Page. Name. Locality, 



ii 890 Helix albella Linn. Virginia, &c. 



H. explanata Miill. 



planorhis marginatus Ch. 

 Rhenana Gmel. 

 umbilicaris olivi Adr. 

 maculata Miill. 

 Planorhis umbilicatus, Sfc. Scbr. 

 ii 899 punctata Bom. Virginia, &c. 



H. isognomostomos Gmel. 

 sinuata (var. y) Gmel. 

 ii 918 urceus Miill. River Mississippi, &c. 



H, plicata Portland Cat. 

 maxima Chemn. 

 ampullacea (var. S) Sclar. 

 Nerita urceus Miill. 

 Bulimus urceus Brug. 

 Ampullaria rugosa Lam. 

 ii 992 Nerita viridis L. Virginia, &c. 



ii 1013 Haliotis Cracherodii Leach. California, 



ii 1036 Patella calyptra Martyn. N. W. Coast America.- 



ii 1045 testudinalis Mull. Greenland, &c. 



P. radiuta Born. 

 virgata Gmel. 

 ii 1055 noachina L. Greenland, &c. 



P. Jissurella Miill. 

 apertura Mont, 

 ii lOGl porphyrozonias Gmel. North America. 



Spenslc* — Bcschrcibung der Ycnus mercenaria Linn. Nebst 

 Al)l)ildiing von L Spengler. (From Shriften der Berlinischen 

 Gesellschaft naturforsch. Freunde, 6, 1785— pp. 307-316.) 



Patje. PI. Fig. Name. Locality. 



307-316 vi 1, 2, 3 Venus mercenaria Linn. Long Island, &c. 



Chemnitz. — Yora buccino glaciali Linnasi nebst einer genauen 

 Al)zeiclinungbcsseiben : von J. II. Chemnitz. (From Schriften 

 d. Berlin. Gcs. Naturf. Fr. Bd. 6, 1785— pp. 317-321.) 



I'liir.^. 



PI. 



Fig. 



Name. 



Locality, 



317 321 



vi 



4, 5 



Turbo glaciale Chemn. 



Greenland. 



