CYCLOSTOMUS §. 5—7. 
417 
§. 5 . 
45. obsoletus Lam. — Operculum Dupontiano (vid. seq.) simillimum: 
Morelet in Journ. Conch. XXIV. 1876. p. 87. 
45 a. 0 . Dupontianus Morelet. f 
„ Testa umbilicata, turbinato-globosa, solidula, costulato- 
striata et liris plus minusve conspicuis superne decussata, 
nitidula, albida vel pallide straminea, fasciis rufis vel brun- 
neis varie cingulata; spira acute conica; anfr. 6 convexi, 
ultimus rotundatus, circa umbilicum mediocrem spiraliter im- 
pressus; sutura denticulata; apertura parum obliqua, subcir- 
cularis, intus vivide fasciata; perist. subinterruptum, aequaliter 
et modice expansum, album, marginibus callo superficial! junc- 
tis, columellari umbilicum semitegente. — Operculum testa- 
ceum, planum, cinerascens, 4-spiratum, nucleo corneo, trans- 
lucido, fere centrali. — Diam. maj. 25, min. 20, altit. 22 mill. 
/?. Unicolor, pallide stramineum.“ (M.) 
Cyclostoma Dupontianum Morelet in Journ. Conch. XXIV. 1876. p. 86. t. 
3. f. 1. (Var. f. 2.) 
Habitat Madagascar. 
Obs. Affinis C. obsoleto Lam., statura et fasciis similis, sed magis glo- 
bulosa, spira elongatiore, umbilico angustiore. 
49. citrinus Sow. — Operculum C. obsoleto simile. — Madagascar 
(Dupont). Excludatur synonymum C. rugosi Sow. ( Morelet in 
Journ. Conch. XXIV. 1876. p. 87.) 
49a. semidecussatus Pfr., Morelet in Journ. Conch. XXIV. 1876. p. 
88. — Cyclostoma rugosum Sow., non Lam. — Bene distinctum a 
C. citrino. — Trinidad. 
§• 6. 
56. ap lustre Sow. — Operculum Cycl. obsoleti operculo simillimum: 
Morelet in Journ. Conch. XXIV. 1876. p. 88. 
§• 
9i a. C. caspicus Mousson. f 
„T. anguste perforata, globose conica, solidula, costulis 
acutis, spiralibus (35 — 38), ad suturam et in regione perfora- 
tionis distantibus, infra dorsum confertis, non confluentibus, 
ornata, interstitiis acute striatis, pallide flavescens. Spira conica 
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