21 



Linn, names. 



3 squamosa 



4 auriculata 



5 sylvatica 



6 turgidula 



7 Helicella 



8 Zonula 



9 patula 



10 formosa* 



11 tridentata 



12 angulata 



13 subcarinata 



14 septemvolva 



15 monodon 



16 fraterna 



17 decisa 



18 dissimilis 



19 virginea 



20 coniformis 



21 concamerata 



Engl, names. 

 scaly 



eared 



wood 



yellow-brown 



scollop-edged 



small girdled 



open-mouthed 



delicate, red stri- 

 ped 



three-toothed 



sharp-angled 



slightly keeled 



seven-whirled 



single-toothed 



brown, five whirl- 

 ed 



tawny Delaware 



dissimilar 



beak-mouthed 



cone-shaped 



dome-shaped 



Synon. ^ Ref. Habitat. 

 Fer.t.4>\,f.S. W. Indies. 



Sw.Z.Ill.v.l. u. 



Fer.t.3%f.l. N.ofEur.L. 



jPer.<.29,/.12. Europe. L. 



Fer.t.ZQ),f.2. Marocco. 



(planata 295.) 



Fer.t.26,f.6. Ceylon. 



(vittata, n. 35.) 



Fer.t.U,f.l5. West Indies. 



Fer.t.3l,f.4>,5,6. u. 



Au.Cah. N. America. L. 



Fr.w. 



L.T.l3,pl.5,f.l. 



Au.Cah. Florida. 



N. America. L. 



L. 



Fr.w. 



Fer.t.lOSjA. u. 

 Cape of G. Hope. 



