PROSERPINA. - BULIMUS. 



7. P. bidentata Adams. •[• 



«Testa P. nitidae similis, sed mullo minor, superne lineis 

 spiralibus impressis pluribus notata, minus glabra, lutescenti- 

 viridis ; apertura dentibus 2 instructa, altero prope basin co- 

 lumellae, aitero paulo supra eum. — Diam. maj. 0,21, min. 

 0,13, alt. 0,08 polL (A.) 



Proserpina hidentata Adams Contrib. to Conchol. N. 5. p. 81. 

 Habitat in insula Jamaica. 



8. opalina Adams. (Coll. 4. — Chemn. I. c. 



p. 13.) Mon. I. p. M. 



Obs. Ad hoc genus referenda videtur Helix Arnoudii Mich. (foss.) 

 in Gu6r. Mag. 1837. t. 81. f. 7 — 9. — Excludatur Proserpina discoidea 

 Ad. = Helix Proserpinula Pfr. 



IX. Bulimus Scopoli. 



De characteribus hujus generis difficillime definiendis con- 

 ferantur, quae in Monographia L p. XIX breviter exposui. 

 Verbis: « apertura longitudinalis » addendum est: (((plano 

 aperturae saepe inclinato , diamelro autem longitudinaH axi 

 subparallela)». Excludantur praeterea species 171 — 192, quas 

 ducibus auctoribus recentioribus , inprimis Cl. Heeve, ad genus 

 Partulam retuh. 



CL Gray (Proc. Zool. Soc. 1847. p. 174) in familia Heli- 

 cidarum sectionem proponit: Bulimina, complectentem genera: 

 Orthostyhm, Bulimum , Partulam., Zuam, Tornatellinam? , Buli- 

 mulum, Pitpam, Vertiginem^ Torquillam, Megaspiram, Clausi- 

 liam, Baleam et Brachypodem. Ex his ad genus meo sensu 

 circumscriptum pertinent: Orthostylus, Bulimus, Bulimulus el 

 Torquillae pars. — CI. Albers (Helic. p. 49 et 135) genus 

 in eodem sensu adoptat, exclusis Partula et Bostryce. Sectiones 

 bene adumbratae sequentes sunt: Orthostylus, Phengus, Eu- 

 doxuSj Amphidromus, Hapalus, Chrysallis , Caryodes, Borus, 

 Orphnus, Placostylus , Coniclus, Pachyotus, Anthinus, Aspastus, 

 Goniostomus, Odontostomus , Pelecocheilus , Charis, Otmtomus, 

 Hamadryas, Drymaeus , Lejostracus, Mesemhrinus, Scutalus, 

 Naesiotus, Peronaeus, Ataxus, Bahdotus, Leptomerus, Nothus, 

 Eurytus, Plectostylus , Orthalicus, Liparus, Limicolarius , Oxy- 

 cheitus, Oheliscus, Opeas, Rumina, Pyrgus, Colohus, Cochlicellus, 

 Napaeus, Merdigerus, Cylindrus, Brephdus, Rachis, Petraeus, 

 Mirus, Chondrus. 



