214 
CYCLOSTOMUS §. 6. 
Tropidophora aspera Gray Catal. Cycloph. p. 40. N. 9. 
Cyclostomus asper Pfr. Consp. N. 311. 
Habitat in insnla Madagascar. 
353 40. Co pyrostomus Sowerby. 
T. umbilicata, globoso-turbinata, solidiuscula, sublaevigata, 
superne spiraliter subsulcata, nitida, fulvescenti - carnea vel 
albida, obsolete strigata et infra peripheriam pallide lilaceo- 
unifasciata; spira turbinata, acutiuscula; anfr. 5’/. 2 convexi, 
ultimus teres, basi glaber; umbilicus mediocris; apertura parum 
obliqua, subovali- rotunda, intus antice nigricans; perist. sim- 
plex, igneum, marginibus callo brevi, emarginato junctis, 
dextro vix expanso, columellari reflexiusculo. — Operc. ? — 
Diam. maj. 25, min. 21, alt. 18 mill. (Mus. Cuming.) 
Cyclostoma hacmastoma Graf, in Act. Bord. XI. p. 437. t. 3. f. 5. *) 
Nec Anton. 
— pyrostoma Sow. Spec. Conch, f. 227. 228. 
— — Reeve Conch, syst. II. t. 183. f. 9. 
— — Sow. Thes. N. 108. p. 129. t. 29. f. 200. **) 
— — Chemn. ed. II. N. 171. p. 157. t. 21. f. 23. 
(Ex Sow.) t. 34. f. 1. 2. 
Tropidophora? pyrostoma Gray Catal Cycloph. p. 41. N. 13. 
Cyclostomus pyrostomus Pfr . Consp. N. 312. 
/?. Testa minore, albida, fascia lilacea pallidissima ; diam. maj. 18'/ 2 , min. 
1 5 , alt. 14 mill. (Mus. Cuming.) 
Cyclostoma pyrostoma var. Chemn. 1. c. t. 34. f. 3. 4. 
Habitat Madagascar, Mayotte. 
354 41. C.? sti'iatiilus Pfr. 
T. umbilicata, globoso-turbinata , solida, oblique striatula 
et lineis concentricis elevatis subconfertis superne sculpta, vix 
nitidula, flavescenti-albida ; spira bre viter turbinata, apice ob- 
tusiuscula; anfr. 5 convexi, summi Jaevigati, ultimus turgidus, 
*) T. turbinato-conica , late umbilicata, transversim striata, vix subca- 
rinata; umbilico pervio ; spira exsertiuscula , acuminata; anfr. 5 rotundatis; 
apertura rotunda ; peristomate rubro, laevigato, extus subreflexo. — Alt. 20, 
diam. 25 mill. — Affinis C. aspero Pot. & Mich. (Grat. 1. c. ) 
**) T. subgloboso-conica, tenuiuscula, flavescente, aurantiaco pallide 
strigata, spira mediocri , apice obtusiusculo ; anfr. 5 rotundatis, postice spi- 
raliter striatis ; sutura distincta ; apertura fere circulari ; peritremate auran- 
tiaco , subincrassato , rotundato , subreflexo , postice subacuminato , prope 
ultimum anfractum subinterrnpto ; umbilico magno. (Sow. 1. c.) 
