CYCLOSTOMUS §. 5. 6. 119 



fulva lufra meclium signatus; umbilicus profundus, ^/^ diametri 

 fere aequans; apertura obliqua, subcircularis , intus concolor, 

 nitida ; perist. mediociiter expansum et revolutum , margine 

 columellari in laminam latissimam , superne adnatam , umbili- 

 cum semioccultantcm, dilatato. — Operc. ? — Diam. maj. 28, 

 min. 22, alt. 16 mill, Ap. oblique 13 mill. longa, 11 lata. 

 (Mus. Cuming.) 



Cyclostoma castum (Cyclostomus?) Pfr, in Proc. Zool. Soc. 1854. p. 150. 

 — — Pfr. Novit. conch. I. p. 9. n. 15. t. 3. f. 10. 11. 



/9. Anfractu ultinio antice longe soluto, dorso carinato: 



Cyclostoma castum monslr. Pfr, Ibid. t. 3. f. 12. 13. 



Habitat in insula Madagfascar. 



45. e ? virgo Pfr. 



T. umbilicata, turbinato-globosa, depressiuscula , tenuis, 

 confertim striata et liris S})iralibus (quarum singulis validiori- 

 bus) asperato-granulata, haud nitens, diaphana, albido-ful- 

 vescens, castaneo trifasciata; spira breviter turbinata, vertice 

 submamillari; anfract. 5 convexi, rapide accrescentes, uhimus 

 rotundatus ; umbilicus profundus, ^/g diametri vix superans; 

 apertura obliqua, subangulato-subcircularis, intus nitida ; perist. 

 dilatatum, undique subrectangule patens, nitidum, albidum, 

 castaneo-maculatum, superne subfornicatum , margine sinistro 

 crenuUitum , supra umbilicum in laminam magnam superne 

 adnatam dilatatum. — Operc? — Diam. maj. 26, min. 21, 

 alt. 15 mill. i^p. 12 mill. longa, lOi/^ hita. (Mus. Cuming.) 

 Cyclostoma virgo (Cyclostomus?) Pfr, in Proc. Zool. Soc. 1854. p. 150. 

 — — Pfr, Novit. conth. I. p. 10. n. 16. t. 3. f. 14. 15. 



Habitat iu insula Madagascar. 



* 



46. Sowerbyl Pfr. (Coll. 217. — Gray Phan. p. 

 148. ■ — ^d. Gen. p. 291. — Cyclostoma mega- 

 cheilus SoTV.J Mon. p. 212. 



§. 6. 



47. ailllistre Soiv. (Ch. ed. nov. p. 249. t. 33. f. 



5 — 7. — Gray Phan. p. 139. — CycJostomus aplu- 



stris Jd. Gen. p. 291.) Mon. p. 212. 



48. asper Pot. et JWIieli. (Graij Phan. p. 149. — 



Ad. Gen. p. 291. — Cyclost. Harveijanum Sow.) - - 213. 



49. pyrostomus Sow. {Ch. ed. nov, p. 251. t. 34. 



f. 1. 2. — Gray Phan. p. 150. — ^rf. Gen. p. 291. 



— Cyclost. hacmastoma Grat.J - - 214. 



