OFISTHOPORUS. 
37 
peristomate duplici, interne prope anfractum penultimum bre- 
viter incise, exteriere superne et ad dextram angulatim expanse, 
reflexiuscLile, ala intus cencava insuper anfractum penultimum 
antrersum ascendente munite. — Diam. maj. 22 — 23, min. 
17 — 19, axis 5—6 mill.^^ (B.) 
Opisthoporus Gordoni Bens, in Ann. and Mag. nat. hist. May 1863. 
Habitat nen precul ab urbe Meulmein Birmaniae (R. 
Gerden). 
9. Cochinchinenjfeis Pfr. {Pterocyclos Cochin- 211 
chinensis Reeve t. 4. f. 22. — Cochin china.) Pneum. II. p. 28. 
10. 0 « Pfr* 212 
T. late umbilicata, depressa, tenuiuscula, vix striatula, 
pallide lutee-cernea, parum nitida; spira parum elevata, mu- 
crenulata; sutura prefunda; anfr. 4 — 4 V 2 cenvexi, ultimus 
teres, antice nen selutus, l^/g — 2 mill, pene aperturam spira- 
cule brevi in sutura erecte munitus; apertura ebliqua, sub- 
circularis, intus leviter margaritacea ; perist. duplex: internum 
continuum , vix prominens , externum latere dextro breviter 
expansum, sinistro obsoletum. — Operc. normale. — Diam. 
maj. 12, min. 9^2? alt 5^/2 mill. Ap. diam. 4^/3 mill. (Coll. 
Nr. 43.) 
Opisthoporus Javanus Pfr. in Malak. Bl. VII. 1860. p. 215. t. 3. 
f. 8—10. 
Habitat in montibus Nungnang ins. Javae (Hochstetter). 
Ohs, Habitu similis Cycloto ojialino Mouss.,^ mihi nondum viso. 
11 . O* SiiBiiatrasiii® Martens, f 213 
„Testa subdepressa, mediocriter umbilicata, striatula, flavo- 
brunnea, fusco-fulminata , apice cornea; anfr. 4 convex!, ulti- 
mus tubulo suturali perpendicular! 3 millim. ante aperturam 
site munitus ; peristoma duplicatum, externum reflexum, rubel- 
lum, prope suturam parumper fornicatim productum. — Diam. 
maj. 11^25 apert. 5 mill,“ (v. M.) 
Opisthoporus Sumatranus Mart, in Monatsber. Ak. Berl. 25. Febr. 1864. 
Habitat in insula Sumatra. 
