ODOiMOSTOMA. 
12 
tigui, plani; sutura complanata; apertura semilunaris; labrum 
tenue, acutum; columella incrassata, impressa, bilamellata. — 
Diam. 5, ait. 3 railL (0.) 
Odontostoma depressa Orb, rnb. I. p. 238. t. 1 8. f. 4 — 7. *) 
Habitat in interiore insulae Cubae (Sagra, Orb.). 
4. O. allognotum (Proserpina) Jonas. 
T. orbiculato-discoidea, depressa, supra aeque ac infra con- 
vexiuscula, glabra, nitida, all^a; callus basalis circularis; anfr. 6 
planulati, suturis parum distincti, ultimus obluse carinatus; aper- 
tura semilunaris, transverse»*, -dentibus o linguiformibus intus 
coarctata; labrum simplex, acutum. — Diam. 3'". (Jon.) 
Helicina lingitifera Jonas in Wiegm. Arch. 1839. I. p. 341. 
Proserpina allognota Jonas in Zeiischr. f. MaL 1 846. p. I 2. 
Helix .... Fer. hist. Fasc. 34. t. 4. f. 13? 
Habitat ? 
^ 5. O. nitidum Guilding. 
T. imperforata, depressa, subdiscoidea , nitidissima, succinea 
vel fulva; spira subplanulata; anfr. 6 celeriter accrescentes, sutura 
lineari, marginata distincti, ultimus latus, depressus, basi vix 
convexiusculus, medio callosus; apertura subtriangularis, lamellis 
4 coarctata, \ maxima in ventre anfractus penultimi, secunda, 
subtorta, valida ad columellam, 2 parallelis in basi anfractus 
ultimi; perist. simplex, acutum. — Diam. maj. 9, inin. 8, ait. 
4 mill. (Coli. Ni\ l.) 
Proserpina nitida Gxdld. inss. (in sched. Guming.) 
— — Sow, Gonch. Man. ed. U. p. 237. f. 274. 
Helix Proseipina Pfr. in Zeitschr. f. Mal. 1845. p. 84. 
— — Chemn. ed. II. Helix t* 1 00. f. 12—15. 
Habitat in insula Jamaica. 
6. O. opalinum (Helix) Adams. 
T. imperforata, depressa, nitidissima, virenti-vitrea ; spira 
planiuscula; anfr. 4^2 planulati, ultimus depressus, basi excavatus; 
apertura obliqua, lunaris, lamella spirali elevata, exlus in basi 
conspicua et marginem attingente coarctata; perist. simplex, acu- 
*) An eadem species? T. discoidea, nilida; spira planiuscula; anfr. 
celeriler crescenlos, uUinnis basi convexiusculus, callo tonui, dilfuso ohduclus; 
columella basi dentata; apertura obliqua, lunata, plica unica spirali, acuta in 
anfractu penultimo prope dentem columellarem posita, ad orificium usque por- 
rigente coarctata; perist. siniple.\, superno dilatalum. — Diam. 5, ait. mill. 
— Helicina plychostoiua Pfr. in Mus. Berol. iiiodit. — Misil E Otto ex insula 
Cuba, ulli legit in districto Cailajabas. 
