STREPTAXIS. 11 



anlrorsum devians, antice et circa perforationcm conipressus. 

 scrobiculatus ; apertura semiovalis, ringens, lamella linguacformi 

 intrante, curvala parietis aperturalis coarclata; perist. carneum. 

 late reflexum, dentibus 5 marginem non attingentibus nmnitum, 

 margine dextro antrorsum arcuato. — Diam. maj. 10, min. 6/2, 

 alt. 5'/2 mill. (Mus. Cuming.) 



Helix aberrata Soid. Petit in Revue zool. 1 8 4 I . p. \0\ . 

 — — Phil. Icoii. I. 3. p. 49. 



Streptaxis aberrata Pfr. Svmb. II. p. 109. 



— — Phil. iJon. II. I 3. p. 129. Hclix t. 8. f. 7. 



— — Chemn. cd. U. Helix t. 102. f. 27 — 30. 



Habitat in Cochinchina. 



Obs. Hel. Dussumieri I"er. in Mus. Paris et conlusula Fer., huc speclanles, 

 mihi ignolae sunl. — Praeterea Arlcmon pianulatus Beck (e Bras.), A. bifrons, 

 protraclus et cylinder Beck (e Guinca) huic generi adnunierandi videnlur. 



IV. Odontostoma Orbigny. 



1. O. eolinum (CarocoUa) Duclos. *{* 



T. imperforata, subsemiglobosa , carinata, superne leviter 

 conica, scabriuscula , infra carinam acutam inflata, glabcrrima. 

 rubra; anfr. 5/2 angusti, ultimus maguus; columella basi uniden- 

 tata; apertura subtriangularis , coarctata : dentibus 2 lamellifor- 

 mibus ad ventrem anfractus penultimi, 3 paraflelis marginem 

 dexlrum fere attingentibus ; perist. simplex, acutum. — Diam. 

 maj. 25, min. 21 '/2, alt. 13 mill. (Ex icone speciminis unici in 

 collectione Dupontiae. ) 



Carocolla eolina Diiclos in Guerin. mag. 1834. t. 30. 



Helix eolina (Helicodonta) Feruss. in Bull. zool. 1835. p. 12. 

 — — Chemn. ed. U. Helix t. 1 00. f. 1 0. H . 

 Ilabitat in imperio mexicano teste Ferussac. 



2. O. globulosum Orbigny. ^ 



T. orbiculato-globulosa, laevigata, nitida, lutea; spira brevis, 

 convexa, apice obtusa; anfr. 5 contigui; apertura semilunaris; 

 labrum acutum; columella incrassata, bilamellata. — Diam. 4, 

 alt. 3/2 miU. (0.) 



Odontosloma (jlohidosa Orh. moll. cub. I. p. 239. t. 1 8 1. 8 — 1 1 

 ilabitat in intcriore insulae Cubae. 



3. O. depressum Orbigny. -^ 



T. orbiculalo-depressa , tenuis, diapliana, laevigala, nitida, 

 luloscens; spira convexiuscula , brevis, apice obtusa; anfr. 6 con- 



