406 IIELIX §. 74. 75. 



perist. album, breviter reQexum, marginibus callo junclis. — 

 Diam. maj. 46, min. 41 , alt. 13 miil. (Goll. Nr. 640.) 

 Helix polygyrata Born test. p. 373. t. \ 4. f. 19. 20. 



— — C/iemn. IX. P. 2. p. 98. t. 127. f. 1124. 2o. 



— — (Heiicella) Fer. pi-. 194. Hist. t. 69 A. f. 7 — 9. 



t. 69 B. f. 5. 



— — Lain. ed. Dh. 150. p. 98. 



— — Desh. In Fer. hist. p. 4. 



— — Moric. Mem. 3e suppl. p. S7. t. 5. f. 1—3. 



— — Chemn. ed. II. Helix N. 568. t. 90. f. 1 — 3. 



— polygyra Gmel. p. 3624. N. 233. 

 Polygyra? polygyrata Beck Ind. p. 23. 



Ilabitat in Brasilia. 



Obs. Variat magniludine. Specimina vidi paulo majoia et mullo niinora. 

 — Tesle Moricand plicae dentiformes 3 — 5 in fundo anfractus ullimi , margi- 

 nem nunquam altingentes , adsunt. 



10-56. H. helicycloides Orbigny. -f 



T, umbilicata, orbiculato-concava , depressa, tenuis, subdia- 

 phana, griseo-flavicans, striata, subtus sublaevigata ; spira con- 

 vexa, apice concavo; anfr. 10; apertura obliqua, semilunaris; 

 labrum crassum, album. — Diam. 16, alt. 5 mill. (0.) 

 Ilelix helicycloides Orb. synops. p. 6. 



— — Orb. voy- P- 246. t. 28. f. 1—4. 



— — Desh. in Fer. liist. p. 10. t. 69 B. f. 3. 

 Polygyra? helicycloides Beck ind. p. 23. 



liabitat in republica Boliviana. 



1057. H. achatina Gray. 



T. sinistrorsa, latissime umbilicata, depressissima , discoidea, 

 laevigata, superne rufa, albido maculata et flammata, basi pal- 

 lida; spira plana, medio vix elevatiuscula; anfr. 6V2 subplanulati, 

 ultimus a latere subcompressus , antice subito deflexus ; apertura 

 subhorizontalis, oblongo-subcircularis; perist. fusculum, undique 

 expansum et reflexum, marginibus lamina prominente, lamellam 

 profunde intrantem emittente junctis. — Diain. maj. 31 , min. 24, 

 alt. 8'/2 mill. (Coll. Gray.) 



Ilelix achatina Gray Mus. 

 — — Pfr. in Zeitschr. f. Mal. 1845. p. 86. 



(i. Minor: diam. maj. 23, min. 18 , alt. 6 mill. (Coll. Nr. 641.) 



Helix. achatina Chemn. ed. H. Helix N. 398. t. 66. f. 28 — 30. 

 Ilabitat in America meridionali? (Gray.) Var. /J specimina pluia 

 a Thcod. Philippi prope Mergui impcrii birmani lecla sunt. 



