172 
CYCLOSTOMUS §. 2. 
cula; anfr. 5, convexis, bicarinatis, inter Carinas undique costis 
irregularibus, subdistantibus munitis; apertura vix obliqua, 
subcirculari; perist. simplici, marginibus approximate, callo 
tenui junctis, margine dextro recto, columellari mediocriter 
expanso. — Diam. maj. 14, min. 12, alt. 17 mill." (A.) 
Cyclostomus mauritianus (Tropidophora) H. Adams in Proc. Zool. Soc. 
1867. p. 305. t. 19. f. 10. 
Habitat „Pouce Mountain" insulae Mauritii (G. Nevill). 
25. sulcatus Lam. I. 201 ( calcareus ). II. 115. III. 126. — Patel Cat. 
p. 122. — Cyclostoma sulcata Lam., calcareum Sow. — Cyclostomus 
calcareus Dohrn in Proc. Zool. Soc. 1865. p. 233. — Tete Mozam- 
bique et ad lacum Nyassa. 
26. rugosus (Cyclostoma) Lam. I. 202. II. 115. III. 126. — Cyclo- 
stoma cinctum Sow. — India. 
27. Creplini (Cyclostoma) Dunk. (Coll. 9.) I. 202. II. 115. III. 
126. — Patel Cat. p. 122. — Zanzibar. 
28. pulcher (Cyclostoma) Gray. (Coll. 10.) I. 203. II. 115. III. 126. 
— Patel Cat. p. 122. — Cyclostoma ortix Val. f ortyx Sow., multi- 
carinata Jay , Arthurii Grat. — Ins. Sechell. 
29. C. Desmazuresi Crosse, f 
„T. umbilicata, turbinata, tenuiuscula vel solidula, costu- 
lis transversis, inaequalibus impressa, aliis (3 — 4) majoribus, 
distantibus, albo et fusco plus minusve articulatis, quasi cari- 
nulas formantibus, caeteris numerosis, parvulis, striis longitu- 
dinalibus decussata, pallide fulvida, fusco maculata; spira 
bre viter conica, apice obtusulo, rotundato; sutura irregulariter 
linearis, vix undulato-plicata; anfr. 4 ! / 2 convexiusculi, embryo- 
nales primi l l / 2 laevigati, fusco-cornei, ultimus vix descendens, 
spiram superans (5 : S 1 ^), ad peripheriam subcarinatus, paulo 
infra fusco cingulatus, basi et circa umbilicum profundum, 
infundibuliformem, pervium pallide castaneus, costulis umbilici 
majoribus et magis distantibus; apertura subverticalis, ovato- 
circularis, ad suturam subangulata, intus pallide fulvida, fusco 
lineata; perist. simplex, marginibus convergentibus, callo tenui 
junctis, columellari reflexiusculo, aurantio-fusco, externo vix 
expansiusculo, subacuto. — Operc. testaceum, albidum, medio 
concaviusculum. — Diam. maj. lO 1 /^, min. S l / 2 , alt. 8^2 mill. 
Apert. 5 mill, longa, 4 lata." (Cr.) 
Cyclostoma Desmazuresi Crosse in Journ. Conch. XXI. 1873. p. 141; 
XXII. 1874. p. 235. t. 8. f. 9. 
Habitat in insula Rodriguez (Desmazures). 
