104 LEPTOPOMA &. 1. 
181 4. E. bieolomr E"fr. 
T. perforata, eloboso-turbinata, tenuis, sub lente confer- 
üssime spiraliter striata, diaphana, albida, castaneo bifaseiata; 
spira turbinata, obtusula;; anfr. 5 convexiusculi, ultimus rotun- 
datus, lineis 5—4 distantibus vix filoso- Bicyatis munitus; aper- 
tura obliqua, subeireularis; perist. simplex, subaequaliter an- 
gulatim expansum , marginibus callo tenuissimo junctis, colu- 
mellari leviter sinuato. — Operc.? — Diam. maj. 13'/;, min. 
10, alt. 10 mill. Ap. intus 7 mill. longa. (Mus. Cuming.) 
Cyclostoma bicolor (Leptopoma) Pfr. in Proc. Zool. Soc. 1852. 9 Mart, 
- — . Chemn. ed. II. Cycl. N, 401. t. 48. f. 25—27. 
Habitat... .'"? 
182 9. HH. maelamnostomnaum E'etit. 
T. perforata, globoso-conica, tenuis, laevigata, nitida, sub- 
pellucida, alba; spira conica, acuta; anfr. 5, convexi, infimi 
lineolis CHsgeeuhou interdum fasciati, ultimus ventrosus, non 
descendens; apertura parum obliqua, circularis; perist. inter- 
ruptum, nigrum, margine dextro et basali horizontaliter paten- 
tibus, columellari subexceiso. — Operc. corneum, pallidum, 
arctüspirum, nucleo centrali. — Diam. maj. 12, min. 9, alt. 
9'/, mill. (Mus. Cuming.) 
Cyclostom«a melanostoma Petit in Revue zool. 1841. Oct. p. 308. *) 
- — Petit in. Guérin Mag. 1842. t. 56. 
— — Hombr. et Jacq. Voy. Pol Sud, Moll. t. 12. 
f. 20—924. 
— — Chemn. ed. 1I. N. 189. p. 173. t. 25. f, 12—15. 
(Ex Guér.) 
Leptopoma melanostoma Pfr. in Zeitschr. f. Mal. 1847. p. 108. Consp. 
N. 150. 
— — Gray Catal. Cycloph. p. 24. N. 7. 
Habitat in Nova Guinea. 
183 6. E, lIuteostonmum Sowerby. 
T. perforata, globoso- -conica, tenuis, lineis spiralibus sub- 
elevatis, distantibus cincta, pellucida, alba vel fulvida; spira 
*) T. ventricoso-conica, tenuissima, alba, subdiaphana, perforata; anfr. 
6 rotundatis, transversim striatis, infimis lineolis rufescentibus, interdum 
fasciatis; spira subacuta; perist. reflexo, tenui, fusco-nigricante, nitidissimo ; 
operculo cartilagineo, tenuissime 6-spirato. — Diam. 12, alt. 14 mill. 
(Petit; 1. c.) 
