HELICINA $. 26. 285 
318. H. biconica Mousson. 1 
»lesta conoidea, angulata, subtiliter striatula, nitida, supra 
lutea, ad suturam rufo-fasciata, infra laete viridis, zona angu- 
lari lutea; anfr. 4!/,, apice submammillato, subplani, ultimus 
supra et infra aequaliter convexus, callo umbilicari circum- 
scripto, lutescente, minutim ruguloso, immediate ad aperturam 
fuscorufescens; apertura parum obliqua, subtriangularis, intus 
fusca; peristoma expansum, album, margine supero stricto, 
solum prope insertionem paulum arcuato, infero arcuato, colu- 
mellari perpendiculari, brevi. — Operculum tenue, fuscum. — 
Diam. maj. 10, min. 7, alt. 6; apert. long. 5!/;, lat. 5 mill.* 
(v. M) 
Helicina biconica  Mousson collect.; Martens Ostas. Zool. II. p. 169. 
Habitat in insula Tees specimen prope Buitenzorg a 
Zollinger lectum. 
Obs. An hue Zelicina viridis Gray in Zool. journ. I. p. 67. t. 6. f. 7, 
Sowerby 'Thes. t. 2. f. 67, Chemn. ed. nov. t. 9. f. 11? Nec Lamarck. Conf. 
Nr. 209. 
H. Dunkeri Zelebor. 
T. sublentieularis, carinata, solida, confertissime capillaceo- 
Striata, sericea, carnea, saturatius varlegata; spira breviter 
conoidea, vertice minuto; sutura levis, marginata; anfr. 4!/, 
planiusculi, ultimus acute compresso- carinatus, basi convexius- 
culus, levius striatus, medio callo crasso, albido, subcircum- 
scripto munitus; apertura diagonalis, triangularis, ad carinam 
subcanaliculata; perist. simplex, margine dextro anguste ex- 
panso, basali reflexiusculo, cum columella brevissima, callosa 
angulum distinctum formante. — Operc. solidum, margarita- 
ceum. — Diam. maj. 10, min. 9, ali. 5 mill. (Mus. Vindob.) 
Helicina  Dunkeri Zelebor mss., Pfr. et Zeleb. in Verh. zool. bot. Ges. 
Wien XVII. 1867. p. 808. 
Pachystoma  Dunkeri Frauenf. ibid. XIX. 1869. p. 879. 
— — . JMórch in Journ. Conch. XX. 1872, p. 331. 
Habitat in insulis Nicobaris. (Zelebor). 
* 
320. Rosaliae Pfr. (Coll. 161.) III. 243. — Ins. Philippin. 
321. pallida Gould. f I. 396. II. 218. III. 244. —  Pütel Cat. p. 125. 
— ns. Feejee. 
322. taeniata Quoy & Gaim. f I. 398. II. 218. III. 244. — Ins. 
Vanikoro. 
393. Barbadensis Pfr. (Coll. 162.) II. 218. III. 244. — Ins. Barbadoes. 
324. Stanleyi Forbes. f I. 401. II. 218. III. 244. — Archip. Louisiad. 
