CYCLOPHORID. 221 
Cyclostoma rubens, Quoy 4 Gaim. Voy. Astrol. ii. p. 189, t. 12, 
f. 36-39; Désh. in Lam. Hist. viii. p. 368, n. 34; Pfr. Ic. n. 202, 
p. 181, t. 30, f. 10-12. 
Cyclostoma Prangii, Pot. & Mich. Gal. Douai, i. p. 240, t. 24, 
£18, 19. 
Hydrocena? rubens, Pfr. in Z. f. Mf. 1847, p. 112, n. 5. 
Realia rubens, Gray, Cat. Cycl. p. 64, n. 5. 
Omphalotropis rubens, Pfr. in Proc. Z. S. 1851; Consp. n. 458; 
Pneum. Mon. p. 309. 
Hab. Isle of France, 
9. REALIA EROSA. 
Shell turreted, conic, perforate, reddish or violaceous yellow, 
with small reddish stripes towards the summit; spire acute; 
whorls 54, rounded, the last one forming half of the total length, 
ventricose, minutely wrinkled obliquely, and indistinctly keeled 
near the umbilicus; aperture half-circular, slightly angulated 
posteriorly; peristome simple, continuous, rose-red. Length 4, 
breadth 2”. 
Cyclostoma erosa, Quoy 5 Gaim. Voy. Astrol. Zool. ii. p. 191, t. 12, 
f. 40-44; Désh. in Lam. Hist. viii. p. 370. n. 37. 
Cyclostoma erosum, Pfr. Jc. n. 200, p. 180, t. 30, f. 32, 33. (From 
Quoy.) 
Hydrocena? erosa, Pfr. in Z. f. UM. 1847, p.112, n. 4. 
Realia erosa, Gray, Cat. Cycl. p. 63, n. 4. 
Omphalotropis erosa, Pfr. in Proc. Z. S. 1851; Consp. n. 459; 
Pneum. Mon. p. 310, 
Hab. Guam, Marianne Islands. 
10. REALIA DUBIA. 
Shell perforate, ovate-conic, nearly smooth, rather thin, reddish- 
horn-coloured; spire conic, subacute; whorls 6, moderately 
convex, the last somewhat shorter than the spire, angulated 
near the perforation; aperture rather perpendicular, ovate 
slightly effuse beneath; peristome simple, sharp, with distant 
margins, right margin straight, columellar margin very shortly 
reflexed. Length 9, breadth 5 mill. 
Cyclostoma dubium, Pfr. in Z. f. M. 1846, p. 86; Jc. n. 203, p. 182, 
t. 30, £ 4-6. 
Hydrocena? dubia, Pfr. in Z. f. M. 1847, p. 112, n. 6. 
Realia dubia, Gray, Cat. Cycl. p. 63, n. 6. 
Omphalotropis dubia, Pfr. in Proc. Z. 8. 1851; Consp. n. 460; 
Prneum. Mon. p. 310. 
Hab. The island Opara (H. Cuming). 
U2 
