CYCLOSTOMUS §. 6. 
215 
peripheria obsolete subangulatus; umbilicus mediocris, profun- 
dus; apertura parum obliqua, subangulato-circularis ; perist. 
continuum , breviter adnatum , incrassatum , expansiusculum, 
superne angulatum. — Operc. ? — Diam. maj. 25 V 2 , min. 21, 
alt. 15 mill. Ap. c. perist. 14 mill, longa. (Mus. Cuming.) 
Cyclostoma striatulum Pfr. in Proc. Zool. Soc. 9 Mart. 1852. 
— — Chemn. z d. II. N. 403. t. 49. f. 1. 2. 
Habitat . . .? 
42. C\ fulvescens Sowerliy. 355 
T. umbilicata, globoso-conica, tenuiuscula, lineis elevatis 
spiralibus, confertis undique aequaliter sculpta, fusco - fulves- 
cens; spira conica, apice acutiuscula; anfr. 5 [ / 2 convexi, ulti- 
mus medio subangulatus ; umbilicus angustus, pervius ; apertura 
obliqua, ovalis, intus castanea; perist. simplex, tenue, pallidum, 
breviter expansum, marginibus fere contiguis. — Diam. maj. 
22, min. 18, alt. 16 mill. Ap. 13 mill, longa, 11 lata. (Coll. 
Nr. 150.) 
Cyclostoma fulvescens Sow. in Proc. Zool. Soc. 1843. p. 63. *) 
— — Sow. Thes. N. 23. p. 99. t. 25. f. 79. 80. 
— — Chemn . ed. II. N. 30. p. 39. t. 5. f. 10. 11. 
Tropidophora? fulvescens Gray Catal. Cycloph. p. 41. N. 12. 
Cyclostomus fulvescens Pfr. Consp. N. 313. 
Habitat in insula Madagascar. 
43. C. insularis Pffr. 356 
T. perforata, globoso-conica, solidiuscula , spiraliter et 
obtuse crebrilirata , lineis confertissimis longitudinalibus sub- 
scabra, non nitens, sordide albida, fasciis nonnullis pallide 
violaceis picta; spira breviter turbinata, obtusula; anfr. 5 con- 
vexi, ad suturam minutissime crenulati, ultimus basi liris ele- 
vatioribus sculptus; apertura vix obliqua, subangulato-circula- 
ris; perist. tenue, undique expansum, reflexiusculum , margi- 
nibus approximatis, callo subemarginato junctis, supero repando, 
sinistro angustiore. — Operc.? — Diam. maj. 17, min. 13'/*? 
alt. 13 V 2 mill. Ap. intus 9 mill, longa. (Mus. Cuming.) 
*) T. globoso-conica, tenuiuscula, pallide brunnea; spira subacuminata; 
anfr. 5 rotundatis, confertim spiraliter striatis, ultimo maximo ; apertura fere 
circulari; peritremate tenui; sutura distincta; umbilico parvo. (Sow. 1. c.j 
