HELIX §. 53. 265 



693. H. orbiculata Ferussac. 



T. imperforata , subsemiglobosa, solida, striata, virenti-fusca ; 

 spira convexa, obtusa; anfr. 5/4 planiusculi, ultimus obsolete 

 angulatus, ad peripheriam zonis 2 angustis, nigricanti-rufis cir- 

 cumdatus, basi planiusculus; apertura perobliqua, lunato-elliptica; 

 perist. incrassatum, subreflexum, fusco-violaceum, marginibus 

 callo junctis, basali late transverse dentato. — Diam. maj. 34, 

 min. 29, alt. 16 mill. (Goll. Nr. 412.) 



Helix orbiculata (Helicogena) Fer. pr. 8 6. Hist. t. 47. f. 4. 



— — iam. ed. Dh. 216. p. 13 1. 



— — Chemn. ed. H. Helix N. 424. t. 70. f. 9. 10. 

 Dentellaria orbiculata Beck ind. p. 35. 



/?. Minor , absque cingulis : diam. 24 , alt. 18 mill. (ex ic.) 



Helix orbiculata var. Fer. hist. t. 47. f. 3. 



Dentellaria decipiens Beck ind. p. 35. 

 Habitat in Guyana et Cayenne. 



694. H. phloiodes Pfr. 



T. imperforata, depressa, solida, sub epidermide corticina 

 (strigis saturatioribus variegata) nitide nigricanti-rufa ; spira sub- 

 planulata; sutura profunda; anfr. 4/2 convexi; columella subrecta, 

 perobliqua , subexcavata ; apertura late lunaris, intus livida, ni- 

 tida; perist. incrassatum, reflexum, fuscum. — R. a. = 3 : 5. — 

 Diam. maj. 29, min. 25, alt. 17^2 mill. (Mus. Guming.) 

 Helix phloiodes Pfr. in Proc. Zool. Soc. 18 42. p. 151. 

 Habitat in insula Zebu Philippinarum (Guming). 



695. H. discolor Ferussac. ^ 



T. imperfoi^ata , depresso-globosa, solida^ sfriata^ obsolefe 

 granulata, pallide rufa; spira semiglobosa; anfr. 4, summi planius- 

 culi , ultimus inflatus , angulatus , supra angulum fascia pallida 

 oruatus, subtus saturatior, antice gibbus , subito deflexus; aper- 

 tura irregulariter ovalis; perist. late incrassatum, subreflexum, 

 marginibus callo junctis , supero dilatato , basali dente oblongo, 

 calloso munito. — Diam. maj. 34, min. 28, alt- 20 miU. (Coll. 

 Nr. 413.) 



Helix discolor (Helicogena) Fer. pr. 79. Hist. t. 46. f. 3 — 6. 



— — Lam. 33. p. 75. ed. Dh. p. 43. 



— — Wood suppl. t. 7. f. 46. 



— . — Chemn. ed. II. Helix N. 47. t. 9. f. 1 1. 12. 

 Dentelluria discolor Beck ind. p. 35. 



Habitat in Gayenne! Trinidad, Martinique (Fer.). 



Obs. Foi-ma saepe irregularis, testa a lalere qiiasi compiessa , cliainetro 

 lon"iorc aucla. 



