40(j 
HELIX §. 74. 75. 
perist. album, breviter reflexum, marginibus callo junctis. — 
Diam. maj. 46, min. 41 , ait. 13 raill. (Coli. Nr. 640.) 
Helix polygyrata Born test. p. 373. t. 1 4. f. 19. 20. 
— * — Chemn. IX. P. 2. p. 98. t. 127. f. 1124. 2o. 
— — (Helicella) Fdr. pr. 194. Hist. t. 69 A. f. 7 — 9. 
t. 69 B. f. 5. 
— — Lam. ed. Dh. 130. p. 98, 
— — Desh. in'FeV. hist. p. 4. 
— — il/onc. Mem. 3e suppi, p. 57. t. 3. 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. 
Habitat in Brasilia. 
Ohs. Variat magnitudine. Specimina vidi paulo majora ol mullo minora. 
— Teste Moricand plicae donliformes .3 — 5 in fundo anfractus- ultimi, margi- 
nem nunquam altingenios, adsunt. 
1056. H. hclicycloidcs Orbigny. ^ 
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, ait. 5 mill. (0.) 
Helix helicycloides Orb. synops. p. 6. 
— — Orb, voy. p. 246. l. 28. f. 1 —4. 
— — Desh. in Fdr. hist, p. 10. t. 69 B. f. 3. 
Polygyra? helicycloides Beck ind. p. 23. 
Habitat in ropublica Boliviana. 
§. 75. 
1057. H. achatina Gray. 
T. sinistrorsa, latissime umbilicata, depressissima, discoidea, 
laevigata, superne rufa, albido maculata ct flammata, basi pal- 
lida; spira plana, metiio vix elevaliuscula; anfr. 6V2 subpianulati, 
ultimus a latere subcompressus , antice subito deflexus; apertura 
subhorizontalis, oblongo-subcircularis; perist. fusculum, undique 
expansum cl reflexum, marginibus lamina prominente, lamellam 
profunde intrantem emittente junctis. — Diam. maj. 31 , min. 24, 
ait. 8'/2 mill. (Coli. Gray.) 
Helix achatina Gray Mus. 
— — Pfr. in Zeilschr. f. Mal. 1 845. p. 86. 
fi. Minor: diam. maj. 23, min. 18, ait. 6 mill. (CoU. Nr, 6 41.) 
Helix achalina Chemn. cd. II. Helix N. 398. t. 66. f. 28 — 30. 
Habitat in America meridionali? (Gray.) Var. fi specimina plura 
a Theod. Philippi prope Mergui imperii binnani lecta sunt. 
