216 
REALIA §. 4—6. 
7 l l 2 , primi magis, sequentes minus convexi, ultimus planulatus, 
infra distincte angulatus, ad basin convexiusculus , ad per- 
forationem apertam arete rotundatus. Apertura verticalis, 2 / 7 
altitudinis aequans, pene circularis. Perist. supra minus, deinde 
magis expansum, ad basin arcuatim paulo productum; margi- 
nibus convergentibus , callo nitido junctis; dextro et basali 
regulariter curvatis; columellari crassiusculo , versus perfora- 
tionem breviter reflexo. — Altit. 8, diam. 3,1 mill. — Rat. 
anfr. 3:1. — Rat. apert. 1 : l.“ (M.) 
Hydrocena Raiateensis Mouss. in Journ. Conch. XVII. 1869. p. 67. t. 5. f. 5. 
Habitat Raiatea insularum Societatis (Garrett). 
Obs. Pease (Proc. Zool. Soc. 1871. p. 476) speciem ad Atropidem 
productam Ps. refert. Conf. R. elongata Pease. 
§• 5. 
41. barbata (Cycl ostoraa) Gould. III. 174 (Hydrocena). — Japonia 
barbata Gould, Pease 1869. p. 159. — Conf. Martens Ostas. Zool. 
II. p. 12. — Ousima Japoniae. 
42. citharella (Cyclostoma) Gould, f III. 174 (Hydrocena). — 
Japonia citharella Gould , Pease 1869. p. 159. — Ousima Japoniae. 
43. musiva (Cyclostoma) Gould, f III. 174 (Hydrocena). — Japonia 
musiva Gould, Pease 1869. p. 159. — Conf. Cyclophorus halophilus 
Bens. (p. 112.) — Japonia? 
§. 6 . 
44. R. costata Pease, f 
„T. ovato-turrita, umbilicata, longitudinaliter costata, co- 
stis ad anfr. ultimum obsoletis; anfr. 6, rotundatis, suturis 
profundis; perist. continuo, vix everso, anfr. penultimo dis- 
juncto; apertura rotundato-ovata, intus aurantia; albida vel 
dilute cornea. — Long. 6, diam. 3 l /2 mill. 44 (P.) 
Realia costata (Scalinella) Harper Pease in Amer. journ. conch. III. 
1867. p. 225. 
Scalinella costata Pease Journ. Conch. XVII. 1869. p. 158. t. 7. f. 2. 
— — Schmeltz in Mus. Godeffr. cat. V. p. 102. 
Habitat in insula Tabaa Polynesiae. 
45. Tahitensis (Cyclostoma) Pease, f III. 173 (Hydrocena?). — 
Scalinella Tahitensis Pease in Journ. Conch. 1869. p. 58. t. 7. f. 
1. — Mart. Sf Langk. Don. Bism. p. 59. t. 4. f. 3. — Schmeltz 
in Mus. Godeffr. cat. V. p. 102. — Huaheine. 
