CYCLOSTOMUS $. 5—7. A417 
&. 5. 
45. obsoletus Lam. — Operculum JDupontíano (vid. seq.) simillimum: 
Morelet in Journ. Conch, XXIV. 1876. p. 87. 
45a. C. Dupontianus Morelet. 7 
»Lesta umbilicata, turbinato-globosa, solidula, costulato- 
striata et liris plus minusve conspicuis superne decussata, 
nitidula, albida vel pallide straminea, fasciis rufis vel brun- 
néis 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 superficiali junc- 
tis, columellari umbilicum semitegente. —  Operculum testa- 
ceum, planum, cinerascens, 4-spiratum, nucleo corneo, trans- 
lucido, fere central. — Diam. maj. 25, min. 20, altit. 22 mill. 
B. Unicolor, pallide stramineum.* (M.) 
Cyclostoma  Dupontianum. Morelet in Journ. Conch. XXIV. 1876. p. 86. t. 
&. 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. — Opereulum C. obsoleto simile. — Madagascar 
(Dupont) Excludatur synonymum C. rugosi Sow.  ( Morelet in 
Journ. Conch. XXIV. 1876. p. 87.) 
49a. semidecussatus Pfr., AMorelet in Joura. Conch. XXIV. 1876. p. 
88. — Cyclostoma rugosum .Sow., non Lam. — Bene distinctum a 
C. citrino. — "Trinidad. 
$. 6. 
56. aplustre Sow. — Operculum Cycel. obsoleti operculo simillimum; 
Morelet in Journ. Conch. XXIV. 1876. p. 88. 
e 
91a. C. caspicus Mousson. 7 
»l. 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 
21 
