OMPHALOTROPIS $. 1. 2. 509 
Cyclostoma scitulum Petit Journ, Conch. 1850, I. p. 47. 
Omphalotropis? scitula Pfr. in Proc. Zool. Soc. 1851; Consp. N. 456. 
Habitat in insulis Taheiti, Eimeo, Manua. 
$. 2. 
7. O0. aurantiaea Deshayes. 509 
T. perforata, ovato-conica, solidula, concentrice minutim 
et confertim striata, rubra; spira conica, acuta; anfr. 6— 7 
vix convexiusculi, ultimus longitudinahter striatus, medio linea 
elevata subcarinatus, basi juxta perforationem linea altera. 
elevata munitus ; apertura obliqua, ovalis, intus concolor; perist. 
subinerassatum, album, expansiusculum, marginibus disjunctis, 
columellari simplice, superne dilatato. — Opere. normale. — 
Long. 9'/, diam. 5!'/, mill. Ap. 4*/, mill. longa, 3'/, lata. 
(Coll. Nr. 231.) 
Cyclostoma aurantiaca  Desh. in Bélanger voy. Zool. p. 416. t. 1. f. 16. 17. 
— — Desh. in Lam. hist. VIII p. 373. N. 48. *) 
Nec Schum. 
- aurantiacum. Müll. Synops. p. 38. 
-— Belangeri Pfr. in Zeitschr. f. Mal. 1846. p. 82. 
— -— Chemn. ed. II. N. 201. p. 181. t. 30- f. 1—3. 
Hydrocena? Belangeri Pfr. in Zeitschr. f. Malak. 1847. p. 112. 
Realia. Belangeri Gray Catal. Cycloph. p. 63. N. 2. 
Omphalotropis aurantiaca. Pfr. in Proc. Z. S. 1851; Consp. N. 457. 
Habitat cirea. Pondichery. 
8. O. rubens Quoy et Gaimard. 510 
T. perforata, ovato-conica, tenuiuscula, obsoletissime con- 
centrice striata, opaca, brunneo et albido marmorata; spira 
conica, acuta; anfr. 7 planiusculi, ultimus a medio lineis non- 
nullis elevatis, basi distinctius carinatus; apertura vix obliqua, 
ovalis; perist. simplex, expansiusculum , albidum, marginibus 
conniventibus. —  Operc. normale. — Long. 8, diam. 4"/, 
mill. Ap. 4 mill. longa, 2?/, lata. (Coll. Nr. 232.) 
Cyclostoma rubens Quoy et. Gaim. Voy. Asirol. Il. p. 189. t. 12. 
f. 386—839. **, 
*) 'T. erocea, elongato-coniea, apice acuta, basi perforata, tenue striata ; 
anfr. 6—7 planiusculis, ultimo ad peripheriam subangulato; apertura ovato- 
circulari, intus lutea, obliqua; marginibus. incrassatis, albidis. — Long. 10 
mill (Desh. l. c.) 
**) T. turrita, eoniea, perforata, carinata, apice acuta, oblique striata, 
