CYCLOSTOMUS §. 3. 4. 
207 
Cyclostoma unicarinata Lam. Encycl. metb. t. 461. f. 1. 
— — Dcsh. in Encycl. meth. II. p. 40. N. 4. 
fulv'frons Sow. Spec. Conch, f. 122. 
— — Reeve Conch syst. II. t 185 f. 20. 
— unicarmatum Sow. Thes. N. 84. p. 120. *) t. 26. f. 120. 
— — Chemn. ed. II. N. 191. p. 174. t. 25. f. 7. 
(Ex Sow.) 
Cyclophora unicarinata Swains. Malacol. p. 336. 
Tropidophora unicarinata Pfr. in Zeitschr. f. Mai. 1847. p. 106. 
— iricarinata var. Cray Catal. Cyclopli. p. 39. 
Cyclos/omus unicarinatus Pfr Consp. N. 302. 
Habitat in insula Madagascar. 
§• 4. 
29. C.? vittafus Sowerby. 2 
T. umbilicata, depressa, subdiscoidea, solidiuscula, oblique 
confertim striata lineisque spiralibus confertissimis , medio an- 
fractus ultimi obsoletioribus, notata, subopaca, albida, interdum 
irregulariter luteo-strigata, fasciis 8—14 castaneis, inaequalibus 
ornata; spira parum elevata, submucronata ; anfr. 5 convexi, 
ultimus magnus, subdepressus ; umbilicus latissimus, perspec- 
tive ; apertura parum obliqua , ovalis , intus fulva , fusco-fas- 
ciata; perist. albicans, breviter reflexum, marginibus fere con- 
tiguis, callo albo subemarginato junctis, dextro superne re- 
pando. — Operc. ? — Diam. maj. 38, min. 31, alt. 19 mill. 
Ap. intus oblique 16 mill, longa, 14 lata. (Coll. Nr. 146.) 
Cyclostoma vittatum Sow. Spec. Conch, f. 91 — 94. 
— — Sow. Thes. N. 62. p. 112. t. 25. f. 89. 90. **) 
— — Reeve Conch, syst. II. t. 185. f. 22. 
— — Chemn. ed. II. Cycl. N. 82. p. 87. t. 11. f 5. 6. 
Cyclophorus? viilaius Pfr. in Zeitschr. f. Malak. 1847. p. 108. Consp. 
N. 124. 
— — Gray Catal. Cycloph. p 21. N. 28. 
Habitat in insula Madagascar. 
*) T. globoso-conica, pallida, spiraliter fusco-fasciata, spira acuminata; 
anfr. 4 — 6 rotundatis, laevibus, medio ultimi carina alba solitaria; apertura 
circulari, superne subangulata ; peritremate albo, incrassato, revoluto ; umbi- 
lico mediocri, spiraliter sulcato. (Sow. 1. c.) 
**) T. subdiscoidea, spira elevatiuscula ; anfr. 5 rotundatis, albicantibus, 
spiraliter fusco-fasciatis , superne spiraliter striatis ; sutura distincta; aper- 
tura magna , circulari , intus fulva, fusco-fasciata ; peritremate albicante, re- 
flexo ; umbilico amplo, anfractibus intus conspicuis. (Sow. 1. c.) 
