"r- 



12 ODONTOSTOMA. 



tigui, plani; sutura compl-anata; apertura semilunaris; labrum 

 tenue, acutum; columella incrassat-a7~4mpressa , bilamellata. — 

 ^iam. 5, alt. 3 mill. (0.) 



Odontostoma depressa Orb. cub. I. p. 238. t. 18. 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 , riitida , alba ; callus basalis circularis ; aufr. 6 

 planulati, suturis parum distincti, ultimus obtuse carinatus; aper- 

 tura semilunaris , transversa , dentibus 5 linguiformibus intus 

 coarctata; labrum simplex, acutum. — Diam. 3'". (Jon.) 



Helidna lingulfera Jonas in Wiegm. Arch. -1839. I. p. 341. 



Proserpina allognota Jonas in Zeilschr. f. Mal. 18 46. p. 12. 



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, min. 8, alt. 

 4 mill. (CoII. Nr. 1.) 



Proserpina nitida Guild. mss. (in sched. Cuming.) 



— — Sow. Conch. Man. ed. II. p. 237. f. 274. 



Helix Proserpina Pfr. in Zeitschr. f. Mal. 1845. p. 84. 

 — — Chemn. ed. II. Ilelix t. 1 00. f. 12 — 15. 



Habitat in insula Jamaica. 



6^ O. opalinum (HeliTc) Adams. ^^*^-^ •'' ' ' 



T. imperforata, depressa, nitidissima, virenti-vitrea ; spira 

 planiuscula; anfr. 4^/2 planulati, ultimus depressus, basi excavatus; 

 apertura obliqua, lunaris, lamella spirali elevata-, extus in basi 

 conspicua et marginem altingente coarctata ; perist. simplex, acu- 



*) An eadem specios? T. discoidoa, iiitida; spira planiuscula ; anfr. 3 '/2 

 celeriler crescenlcs, ultimus J^asi convexiusculus, callo lonui, diffuso obduclus: 

 columella basi dentata; apertura obliqua, lunata , plica unica spirali, acuta in 

 anfractu penultimo propc dontem columellarem posila, ad orificium usque por- 

 rigcnte coarctata; perist. simple.x , suponio dilalalum. — Diam. 5, alt. 2% mill. 

 — Helicina ptychostoma PIV. in Mus. Berol. inodil. — Misil E Olto e.\ insula 

 Cuba , ubi legit in dislriclo Gallajabas. 



