312 OMPHALOTROPIS $&. 2. 
Opere. pallidum, extus concaviusculum. — Long. 6, diam. 4 
mil. Ap. 3 mill. longa, 2!'/, lata. (Coll. Nr. 235.) 
Cyclostoma plicosum (Omphalotropis) Pfr. in Proc. Zool. Soc. 9 Dec. 1851. 
-— — . Chemn..ed. II. N. 383. t. 46. f. 41.42. 
Omphalotropis plicosa. Pfr. Consp. N. 463. p. 71. 
ETabrtat o0.» 
516 14. Q. expansilabris Pfr. 
T. vix perforata, ovato-conica, tenuis, sublaevigata, parum 
nitida, pallide lutea, corneo minutissime variegata et fascia 1 
- rufa infra medium (rarius 2) cincta; spira elevato - conica, 
apice acutiuscul&; anfr. 6 vix convexi, ultimus medio et basi 
filo-carinatus; apertura obliqua, ovalis; perist. undique subae- 
qualiter breviterque expansum, album, marginibus subdistan- 
übus. — Operc.? — Long. 5'/4, diam. 3-mill. Ap. 2 mill. 
longa, 1'/, lata. (Coll. Nr. 230.) 
Cyclostoma expansilabre (Omphalotropis) Pfr. in Proc. Zool. Soc, 1851. 
— — Chemn. ed. II. N. 296. t. 39. f. 17—19. 
Omphalotropis expansilabris Pfr. Consp. N. 464. p. 71. 
Habitat in fruticibus in interiore insulae Mauritii (Sir D. Darclay). 
XXIX. Bourciera. Pfr. 
Opereulum ovale, solidiusculum, corneum, anfractibus 
paucis rapide accrescentibus. Testa helicinaeformis; columella 
basi dentata; apertura ovalis; peristoma expansum. 
Bourciera Pfr. in Zeitschr. f. Malak. 1851. p. 178; Consp. p. 49. 
Cyclostoma (spec.) Pfr. olim. 
ade e : 
Species unica: 
517 1. EP. helicimnnefornmnmiüs Pfr. 
T. obteete umbilicata, conoideo-globosa, solidula, striatula, 
parum nitens, virenti-cornea; spira parvula, conoidea, acutius- 
cula; anfr. 6 convexiuseuli, ultimus inflatus, antice subascen- 
dens, pone columellam profunde excavatus, callosus; apertura 
subvertiealis, angulato-ovalis; columella subverticalis, retrorsum 
in dentem acutum desinens; perist. incrassatum, album, undi- 
