OPISTHOPORUS. 
43 
11. Cochiricliinensis (Cyclostoma) Pfr. II. 28. III. 37. — Plerocy - 
clos Cochinchinensis Reeve. — Cochinchina. 
12. corniculum (Cyclostoma) Mouss. (Coll. 3.) I. 38 (Cyclotus). 
II. 24. III. 31. 37 (javanus). — Martens Ostas. Zool. II. p. 112. 
— Java. 
i3. 0. pertusus (Cyclostoma) Morelet. f 
„T. late umbilicata, orbicularis, depressa, tenuis, striata, 
luteo-fulva; spira vix prominens; anfr. 4 convexiusculi, sutura 
profunda dSscreti, ultimus antice subdeflexus, breviter solutus, 
spiraculo tubulari ad aperturam pertinente , in anfractuum 
intervallo, munitus; apertura circularis, intus albido-coerulea; 
orificium spiraculi submarginale ; peristoma continuum, sim- 
plex, vix expansiusculum. — Operculum? — Diam. 12, altit. 
7 mill." (M.) 
Cyclostoma pertusum Morelet in Journ. x Conch. IX. 1861. p. 177. Conf. 
Mart. Ostas. Zool. II. p. 114 (Opisthoporus ?). 
Opisthoporus pertusus Issel Moll. Born. p. 75. 
Habitat in insula Borneo (Lefer de Lamothe). 
* 
14. Sumatranus Martens, f III. 37. — Martens in Monatsber. Berl. 
Ak. 1864. p. 116; Ostas. Zool. II. p. 112. t. 1. f. 4. Sumatra. 
is. 0. Penangensis StoSiczka. t 
„0. testa sub-discoidea , apice paulum exserta, latiuscule 
umbilicata, corneo solidula; anfractibus 4^2 ad 5, teretibus, 
sutura profunda junctis, epidermide brunnea vel nigrescente, 
transversim confertissime striata, in ultimo anfractu ad peri- 
pheriam superam et inferam breviter ciliata, indutis, sub epi- 
dermidem albescentibus atque strigis transversis, brunneis vel 
fuscis, paulo undulatis, aut plus minusve acute angulatis, no- 
tatis; apice sub-mammillato, nigrescente vel pallido; umbilico 
modico, fere dimidium latitudinis anfractus penultimi expo- 
nente; ultimo anfractu ad aperturam valde descendente, sed 
haud dissoluto, ad suturam tubulo brevi tenuique, saepissime 
tius curvato instructo, ad aperturam breviter soluto; colore albida, strigis 
castaneis latiusculis, fulguratim transeuntibus , et ad peripheriam ult. anfr. 
fascia castanea dentata interruptis; epidermide cornea, rugulose striata; aper- 
tura obliqua, subcirculari , perist. duplici, interno laevi, supra paulo emargi- 
nato, extern o expanso et reflexiusculo, alato, ala intus excavata, angustatim 
in anfr. penultimum ascendente et adnata. — Diam. maj. 0,91, min. 0,75, 
alt. 0,27; apert. 0,27 unc, — Valle Sittonug prope Tonghu (Mason). “ 
