104 
LEPTOPOMA §. 1. 
181 4. Ii. bicolor Pfr. 
T. perforata, globoso-turbinata , tenuis, sub lente confer- 
tissime spiraliter striata, diaphana, albida, castaneo bifaseiata; 
spira turbinata, obtusula ; anfr. 5 convexiusculi, ultimus rotun- 
datus, lineis 3 — 4 distantibus, vix filoso-elevatis munitus ; aper- 
tura obliqua, subcircularis ; perist. simplex, subaequaliter an- 
gulatim expansum, marginibus callo tenuissimo junctis, colu- 
mellari leviter sinuato. — Operc. ? — Diam. maj. 13 V 2 , min. 
10, alt. 10 mill. Ap. intus 7 mill, longa. (Mus. Cuming.) 
Cyclostoma bicolor ( Lcptopoma ) Pfr. in Proc. Zool. Soc. 1852. 9 Mart 
— — Chemn. ed. II. Cycl. N. 401. t. 48. f. 25 -27. 
Habitat . . . ? 
182 5. L< melanostoiftiiiBn Petit. 
T. perforata, globoso-conica, tenuis, laevigata, nitida, sub- 
pellucida, alba; spira conica, acuta; anfr. 5 J / 2 convexi, infimi 
lineolis rufescentibus interdum fasciati, ultimus ventrosus, non 
descendens; apertura parum obliqua, circularis; perist. inter- 
ruptum, nigrum, margine dextro et basali horizontaliter paten- 
tibus, columellari subexciso. — Operc. corneum, pallidum, 
arctispirum, nucleo centrali. — Diam. maj. 12, min. 9, alt. 
97-2 mill. (Mus. Cuming.) 
Cyclostoma mclanosioma Petit in Revue zool. 1841. Oct. p. 308. *) 
— — Petit in Guerin Mag. 1842. t. 56. 
— — Hombr. et Jacq. Voy. Pol Sud. Moll. t. 12. 
f. 20—24. 
— — Chemn. ed. II. N. 189. p. 173 t 25. f. 12 — 15. 
(Ex Guer.) 
Lcptopoma melanostorna Pfr. in Zeitschr f. Mai. 1847. p. 108. Consp. 
N, 150. 
— — Gray Catal. Cycloph. p 24. N. 7. 
Habitat in Nova Guinea. 
183 6. I j. iuteostoBmim Sowcrby. 
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.) 
