BOURCIERA. 313 
que late expansum, reflexiuseulum. —  Operc. typicum. — 
Diam. maj. 17'/,, min. 13, alt. 11 mill. (Mus. Cuming.) 
Cyclostoma heliciniforme Pfr. in Proc. Zool. Soc. 1851. 
€ x Chemn. ed. II. N. 224. t. 32. f. 8—10. 
Bourciera helicinaeformis Pfr. Consp. N. 465. p. 71. 
Habitat in valle Yaraqui reipublicae Aequatoris (Bourcier). 
Cyclostomacea sedis omnino incertae, vel dubia. 
1. €yelostoma euspidatum Benson. 518 
T. umbilieata, acuminato-conoidea, oblique striata, lineis 
spiralibus cireumdata, epidermide olivaceo -fusca;. spira elon- 
gata, attenuata, apice mammillari; anfr. 5, primi convexi, ulti- 
mus et penultimus superne convexiusculi, lira unica praediti, 
ultimus subtus convexus, peripheria carinata, carina lamellato- 
fimbriata, basi 3-lirata, lira subumbilicari fimbriata; apertura 
perobliqua, subeircularis, superne subangulata, dimidium lon- 
gitudinis aequans; perist. tenue, acutum, margine columellari 
expansiuseulo; umbilicus mediocris, profundus, anfractus plures 
exhibens. — Operc.? — Diam. maj. 60, min. 5, alt. 4 mill. (B.) 
Cyclostoma cuspidatum Bens. in Ann. and Mag. VIII. 1851. p. 189. 
— — Chemn. ed..II. Cycl. N. 407., t. 49. f. 21—23. 
Habitat ad apices montium Nilgherries (Jerdon). 
2. €yeclosioma marginatum Chemnitz. 519 
T. alba, subovato-rugosa, perforata, anfractibus transver- 
sis marginatis et striatis. (Chemn.) 
Turbo marginatus Chemn. Conch. IX, P.2. p. 60. t. 123. f. 1075 e f. *) 
—  limbatus Gmel. Syst. p. 3606. N. 105. **) 
Cyclostoma murrhinum Menke Synops. ed. IL. p. 39, (ex citat.) 
Habitat Coromandel. 
Obs. An potius Jhiniae species? 
*) Testa striis subtilibus et longitudinalibus scabra et rugulosa, striis 
crebris acutis transversis quasi costata; umbilieus parvus; apertura circu- 
laris; opereulum testaceum , album, orbieulare, striis concentricis notatum. 
(Chemmn. 1. c.) 
**) Testa subovata rugosa perforata alba. (Gmel. l. c.) 
