GENEIU ET SUBGENERA. 551 



Ptanispira Btick iiul. p. 29. — Subgenus Helicis e socliono renexilabriuni , ex 



lypis Hel. excepliuncuiae , zonaiiae , bigoniae. 

 Plati/closter van Hasselt. — Genus non designatuni , a Beck (ind. p. 2.) cuin 



dubio inter synonyma Helicopsis relalum. 

 Plecochilus Agass. Nom. zool. et Herrni. ind. 11. p. 2S9: vid. Plekoclieilus. 

 Plectostijlus Beck ind. p. 58. — Subgenus Buliiiji e sectione tenuiiabrium ex 



typis Bul. pei uviani , coquimbensis , cactivori. 

 Plekocheilus Guilding iu Zool. Journ. lil. p. 532. — Geiius Pupadaruin, auctori 



antea Gaprella, ex lypo Bul. auris Sileni Born. 

 Pleocheitus M. E. Gray fig. moll. anira. l. 74. vid. Plekoclieilus. 

 Pleurodonta Fischer Mus. Demid. 111. — Genus pro Ilel. lychnucho et sinuata 



Miill. constitutuni , a Gray (Syn. Br. Mus.) inter genera Helicidarum secl. 



f. enumeratum, Beckio (ind. p. 33.) subgenus Helicis e seclione reflexi- 



labrium. 

 Plicadomus Swainson Mal. p. 332. — Subgenus Pupae ex typo Pupae sulca- 



lae MuU. 

 Plicaptiora Ilarlmann Erd- u. Sussw. Gast. I. p. 216. — Subgenus Clausiliae 



ex typo CI. plicatulae. 

 Plicaria Hartmann syst. tJb. — Subgenus Helicis ex typo non designato. 

 Poligijra Say vid. Polygyra. 

 Polita Held in Isis p. 916. — Genus Helicum ex typis Hel. cellariae, crystal- 



linae, fulvae etc. 

 Potijdontes Montfort Coiich. syst. II. p. 154. — Novum geiius pro Hel. impe- 



ratore Mtf. constitutuin , a Gray (Syn. Br. Mus.) inter genera Helicidarum 



sect. f. enuineratum, a Beck (ind. p. 32.) iiiter subgenera Helicis e sec- 



tione reflexilabrium , a Swainson (Malac. p. 329.) inter subgenera Lu- 



cernellae adoptatum. 

 Polijgyra Say in Nichols. Enc. — Genus Gasteropodum terrestrium ex typo 



Hel. septemvolvae et avarae Say, simili sensu a Lea (obs. II.) adoplatum, 



a Beck (ind. p. 23.) sensu strictiore inter subgenera Helicis e sectione 



planilabrium , a Swainson (Mal. p. 330.) inter subgenera Lucernellae 



adoplalum. 

 Potymila Beck ind. p. 44. — Subgenus Helicis e sectione crassilabrium ex 



typis Hel. piclae Born et carnicoloris Fer. 

 Polijphemus Montfort Conch. syst. II. p. 413. — Genus pro Bulla volula 



Chemn. instilutum, a Gray (Syn. Br. Mus.) inter genera Helicidarum secl. 



h. adoptatum, Charpentiero (cat. moll. Suiss. p. 13.) subgenus Bulimi. 

 = Achatina §. 8 — 12. 

 Potijphemus Villa disp. syst. p. 19. — Genus Conchyliorum terrestrium prae- 



ter Polyphemos Montf. etiam Ach. aciculam continens. 

 Pomatia Gesner, Bolten, Leach moll. p. 89 teste Gray. — Genus pro Hel. 



pomatia Linn. institutum , inter subgenera Helicis a Beck (ind. p. 43. in 



sectione crassilabrium) et Gray (Man. p. 135.) adoptatum. 

 Proserpina Guilding? Gray? Vid. Monogr. I. Introd. pag. XVIII. 

 Proteusia Hartinann syst. iJbers. — Subgenus Helicis ex typo non indicato. 

 Psitochijlus Agass. Nom. — Genus Pulmonatorum mihi ignotum. 

 Pupa Humphrey Mus. Calonn. vid. Fer. prodr. p. 78. — Genus Heliceorum (?) 



typis incognitis. 

 Pupa Draparnaud. Vid. Monogr. I. Introd. pag. XXII. 

 Pupa Cuvier r^gne animal H. p. 407. — Subgenus Helicis, a Draparnaudiano 



emisso Chondro diflerens, a Studer in subgeneribus Glischri adoptatuni. 

 Pupa Charpentier cat. moll. Suisse p. 15. — Genus molluscorum terrestrium 



cujus subgenera sunt: Eucore , Sphyradium, Chondrus. 

 Pu/)a Beck ind. p. 81. — Genus BuUmidorum. Subgenera : Gibbulina, Pupa, 



Urocoptis, Pupilla, Vertigo, Alaea, Torquilla , Chondrula, Cyclodonlina, 



Pyrgelix , Brachypodella. 



