HELIX §. 86. 87. 261 



confertim rugoso-plicata, fusca; spira parum elevata, plane 

 conoidea; sutura impressa; anfr. 8 convexiusculi, ultimus an- 

 tice breviter descendens, peripheria subangulatus, albido-cin- 

 gulatus, subtus striatus; umbilicus latus, perspectivus, conicus; 

 apertura obliqua, parvula, lunato-suhcircularis; perist. tenue, 

 carneum, subangulatim reflexum, marginibus approximalis. — 

 Diam. maj. 25, min. 22, alt. 12 mill. '('Coll. Nr. 820.) 

 Helix ocidus Pfr in Zeitschr. f. Malak. 1849. p. 14 4. 



— — Chemn. ed. II. Helix N. 842. t. 131. f. 11 — 13. 



— Typinsana A. Adams et Beeve Voy. Samarang. Moll. p. 



60. t. 15. f. 3. 



— — Reeve Conch. ic. N. 421. t. 80. 



P? Major, dejDressa, umbilico laliore; diam. maj. 29, min. 25, alt. 

 10 1/2 mill. (Mus. Cuming.) 

 Helix vermis Reeve Conch. ic. N. 42 4. t. 80. 

 Habitat in insulis Maris Ghinensis. 



Obs. Peraffinis praecedenti; differt sculptura, anfractu ultimo sub- 

 angulato, peristomate tenui. 



§• 87. 



1527. circulus Pfr. [Chenm. ed. nov. I. p. U7. — 



Reeve N. 440. t. 82. — Hab. Loo Ghoo, teste 



Mus. Brit.) Mon. [. p. 406. 



1528. Lusitanica Pfr. (Coll. 821. — Chemn. ed. nov. 



I. p. 362. — Gonostoma Alb. p. 94.) - - - 411. 



1529. H. bulbina Deshayes. -^ 



T. orbiculato-discoidea , late umbilicata , tenuis , fragilis, 

 corneo-flava, pellucida, tenuissime punctulata; spira depressa; 

 anfr. oY^ pianulati, ultimus ad peripheriam obtusissime sub- 

 angulatus: angulo candidulo; apertura ovato-lunaris , obHqua, 

 coarctata; perist. candidum, tenue, reflexum. — Diam. 12, 

 alt. 6 mill. (Desh.) 



Helix hulbina Desh. in Fer. hist. I. p. 108. N. 147. t. 85. 

 f. 14 — 18. 

 Habitare dicitur in ripis fluviorum Ohio, Mississippi, Missouri. 



1530 H. gyria Roth. 



T. umbilicata, orbicuiata, depressa, superne concava, tenui- 

 uscula, distincle striatula, nitidula, cornea; anfr. 7 convexi, 

 arcte convoluti, ultimus compressus, antice vix descendens, 

 basi laevior, convexus, circa umbilicum mediocrem, subcylin- 

 dricum subanguUitus; apertura parum obliqua, angusta, luna- 

 ris; perist. angulatim breviter reflexuni, albidum. — Diam. 

 maj. 14, min. 12, alt. oy^ mill. (Mus. Cuming. ) 



