— 8 — 



Acephalaea Lamck. 1812. contin. 



classis Molluscorum. Subclasses: Dimyaria, Mo- 

 nomyaria, Brachiopoda. 

 = ConcliifGra Lanuk. 

 Aceplialopltora Blainv. 1814. Prodr. * et 1823 in Dict. sc. 

 nat. sub voce Mollusques. * et 1825. Malac. p. 508. 

 Etyni. u privat.; )(£q>ali), caput; (peQCi), fcro. 

 Tertia classis Malacozoorum. Ordines: Palliobran- 

 chiata, Rudista, Lamellibranchiata, Heterobranchia. 

 Synon. Mollusca subsilientia Poli. 

 Acephala Cuv. ex parte. 

 Acephalaea Lamck. Phii. zool. 

 Acephalaea et Tunicata Lamck. 1812. et Desh. 



1830. 

 AcephaLi Fleming. Rang. 

 = Conchifera et Tunicata Lamck. 

 Acera La^ick. 1812. Extr. d'un Cours. 



Efym. ccxeQog = cixsQceTog = ccxsQCog, non cor- 



nutus. 

 Gcnus Laplysiaceornm. 



Lamck. 1818. llist. (ed. 2» YII. p. 660.) — genus 

 Bullaeaceorum. 

 Parilor Puiuppi 1836. Moll. Sic. I. p. 120 et 1844. 



ib. II. p. 93. 

 Cantraixe 1840. 3Ialac. medit. * 

 =: Doridium Meckel. 

 Acera (les Aceres) Ferussac 1819. Tabl. syst. 



Altera familia Tectibranchiatorum. Genera: Dori- 



dium, Bullaea, BuIIa, BuIHna, Sormetus. 

 Adoptat eodeni loco Latreille 1825. Fam. nat. (ed. 

 Germ, p. 171.) — les Aceres. — Genera: 



a. testacea: Bullaea, BuUa, Sormetus, (Bullina 

 Tentaculatis adnuineratur.) 



b. nuda: Doridium. 



Pariter Rang 1829. Man. p. 146. — Genera : Akera, 

 BuIIa, Gasteropteron, Sormetus. 

 Desh. 1830. Enc. meth. III. p. 553. Tabl. — Ima 



