— 320 — 



Polyphemiis Montf. contin. 



CiiARP. 1837. Cat. moU. Suiss. p. 13. — subgenus 



Bulimi. 

 ViLLA 1841. Disp. syst. p. 19. — genus Conchylio- 



rum terrestrium. 

 Gray 1842. Syn. Brit. Mus. p. 91. — genus Helici- 

 darum. 

 = Glandina Schum. 

 Polypl t e s t a c e i List. vid. N a u t i 1 i List. 



Polyplacophora (Polyplaxophores) Blainv. 1816. Bull. 



Soc. philom. * et Polyplaxiphora 1824. Dict. 



sc. nat. tom. 32. p. 380. et 1825. Malac. p. 601. 



Etym. noXvg, multus; nXa^y lamina; q^sQtOj fero. 



Emendavit Gray 1821. 

 Secunda classis Malentozoorum. Unicum genus: 

 Chiton. 



Feruss. 1821. Tabl. syst. p. XXVIL — secundus 



subordo Cyclobranchiorum. Familia: Chitones. 



Pariter Menke 1830. Syn. ed. 2a p. 91. — fami- 

 lia: Chitonacea. 

 Gray 1821. Lond. Med. Rep. * — bene Polypla- 



cophora — ordo Cryptobranchiorum. Genera: 



Gymnoplax, Cryptoplax. 

 Desh. 1830. Enc. meth. IIL tabh — prima familia 



Cyclobranchiorum. Genera: Chiton, Chitonellus. 

 Syvon. Polyconchae Blainv. olim. 



Multivalvia seriaba Blainv. olim. 



Loricata Schum. 



Polyplacophora Gray. Menke. 



Polyplaxiphora Blainv. 



Crepidopoda Goldf. 



Lamellata Latr. 



Polyplaxiphorae Menke olim. 



Polyplakiphora Guild. 



Cyclobranchia Swains. Gravenh. 



