REALIA $. 2. 3. 913 
impressa; apertura rotundato-ovata, intus aurantiaca; perist. 
continuo, anfr. penultimo late adnato. — Long. 6, diam. 
3 mill. (P.) 
KRealia. abbreviata Pease in Proc. Zool. Soc. 1864. p. 674. 
Omphalotropis abbreviata Pease in Journ. Conch. XVII. 1869. p. 674. 
Atropis abbreviata Pease in Proc. Zool. Soc. 1871. p. 476. 
Habitat in insula Taiti. 
8. 3. 
28. ? exserta (Hydrocena) Pfr. II. 159. III. 173. — Assiminea ex- 
serta, Pease 1869. p. 164. — Shanghai. 
29. obtusa (Hydrocena) Pfr. II. 159. III. 173. — Habitat? 
30. oblonga (Hydrocena) Pfr. (Coll. 15.) II. 159. III. 173. — Om- 
phalotropis oblonga Pease 1869. p. 154. —  Atropis oblonga Pease 
1871. p. 476. — Ins. Marquesas. 
31. R. Scherzeri (Hydrocena) Zelebor. 
T. perforata, oblongo-turrita, tenuiuscula, leviter striata, 
fulvo-cornea; spira conica, vertice acutiusculo; anfr. 6 convexi, 
ultimus ?/, longitudinis subaequans, rotundatus, antice fortius 
Striatus; apertura verticalis, irregulariter ovalis; perist. conti- 
nuum, rectum, ad anfr. contiguum breviter adnatum, margine 
columellari breviter patente. — Long. 6, diam. 3 mill.; apert. 
21, mill. longa. (Mus. Vindob.) 
Hydrocena Scherzeri Zeleb. mss.; JPfr. & Zeleb. in Verh. zool. bot. Ges. 
Wien. XVII. 1867. p. 807. 
Atropis Scherzeri Pease in Proc. Zool. Soc. 1871. p. 476. 
Habitat in insula Tahiti. 
Obs. Differt ab 7. oblonga Pfr. testa pellucida, anfractibus convexis, 
ultimo non angulato, etc. 
* 
32. ? pyramis (Hydrocena) Pfr. II. 160. III. 173. —  Assiminea 
pyramis Pease 1869. p. 163. — Singapore. 
33. exigua (Cyclostoma) Hombr. & Jacq. t II. 161. III. 173 (Hy- 
drocena). —  Omphalotropis exigua Pease 1869. p. 154. — Atropis 
exigua Pease 1871. p. 476. — Ins. Mangareva. 
34. R. parvula (Hydrocena) Mousson. 1 
,l. vix imperforata, ovato- et elongato-conica, striatula, 
nitidiuseula, corneo-rufescens, concolor. Spira subconvexo- 
conica; summo minuto, nec acuto, nec obtuso; sutura lineari, 
subimpressa. Anfr. b, convexiusculi, ultimus satis magnus, 
