286 
HELICINA $. 26—38. 
325. Nicobarica Phil. (Coll. 163.) I. 402, II. 218. III. 244. — yon 
326. 
327. 
in Amer. journ. conch. V. p. 111: ins. Andaman. — Pachystoma 
AMórch in Journ. Conch. XX. 1872. p. 318. — Ins. Nicobar. 
Andamanica Bens. t III. 244. — Zanl. & Theob. Conch. Ind. I. 
t. 6. f. 10. — Ins. Andaman. 
suturalis Martens. t III. 244. — Mart. in Monatsber. Berl. Ak. 
1864. p. 120; Ostas. Zool. II. p. 168. t. 4. f. 18. — Amboina, Ceram. 
H. discoidea Pease. 1 
.IT. depressa, tenuiscula, vix nitidula, oblique tenuiter et 
irregulariter rugoso-striata; spira breviter conoidea; anfr. 5, 
plano- -convexis, "ultimo depresso, ad peripheriam costato-cari- 
nato; apertura triangulari-lunaris; perist. simplici acuto, vix 
reflexo, ad basim acute angulato, subemarginato, super basim 
eallo continuato; columella. eallum copiosum, subgranulosum, 
cireumscriptum; callo suleo arcuato marginato. Subrufa, in- 
terdum straminea vel cornea. — Diam. maj. 5!/, min. 5, alt. 
amid (P 
Helicina, discoidea Harper Pease in. Amer. journ. conch. III. 1867. p. 226. 
Habitat in insula Tahaa Polynesiae. 
330. 
331. 
332. 
333. 
334. 
335. 
336. 
337. 
338. 
8. 21. 
.rhodostoma Gray. I. 398. II. 218. III. 244. — Color variabilis: 
saepe fere alba; peristoma album, roseum vel saturate castaneum; 
spina columellaris longitudine varians, interdum obsoleta; operculum 
magnum, tenue, corneum. — Guppy in Ann. and Mag. n. h. 4th. 
ser. I. 1868. p. 435: ins. Dominica. — Pütel Cat. p. 126. — Gua- 
deloupe. 
bicolor Pfr. I. 398. II. 218. III. 244. —  Taheiti? (Negat Pease 
in Proc. Zool. Soc. 1871. p. 466.) 
spinifera Pfr. II. 218. III. 244. — Ins. Salomonis. 
livida Hombr. & Jacq. ft II. 219. III. 245. — Ins. Salomonis. 
angulata Sow. (Coll. 164.) I. 399. II. 219. III. p. 245. — .Pátel 
Cat. p. 125. —  Pachystoma. angulata  Frfd. in Verh. zool. bot. Ges. 
Wien XIX. 1869. p. 879. — Brasilia. 
$. 98. 
Besckei Pfr. (Coll. 165.) I. 402. II. 219. III. 245. — Pütel Cat. 
p. 125. — Brasilia. 
variabilis Wagn. (Coll. 166.) I. 402. II. 219. III. 245. —  Pütel 
Cat. p. 126. — Helicina fasciata et flava pix, zonata Sow., zephy- 
rina Pot. $. Mich, rosea. Mühlf. — Brasilia. 
biangulata Pfr. (Coll. 167.) I. 403. II. 219. III. 245. — Habitat? 
Tilei Pfr. (Coll 168.) I. 403. II. 219. III. 245. —  Pütel Cat. p. 
126. — Brasilia. 
trochlea Gould. f II. 220. III. 245. — Ins. Aurora. 
