— 351 — 



Pteropoda Blatnv. 1824. Dict. sc. nat. tom. 32. p. 283. et 

 1825. Malac. p. 493. 

 Secunda familia Nucleobranchiatorum. Genera: At- 



lanta , Spiratella , Argonauta. 

 Sow. jun. 1842. Conch. Man. ed. 2a p. 239. — in- 

 seruntur Pharetrium et Entale. 

 == A t ] a n t e a Desh. 

 Pterosoma Lesson 1827. Mem. de la Soc. d'hist. nat. de 

 Par. III. p. 414. * 

 Etym. meQov, ala; GWfia, corpus. 

 Novum genus Heleropodum. 



Pariter Voigt 1834 in Cuv. Thierr. III. p. 150. 

 Rang 1829. Man. p, 125. — genus Pterosomarum. 

 Menke1830. Syn. ed. 2a p. 10. — in Caryobranchiis. 

 Oken 1835. AUg. Naturg. V. 1. p. 519. — in Pte- 

 ropodis. 

 Pterosoniae (les Pterosomes) Rang 1829. 3Ian. p, 124. 



Pnma familia Nudibranchiatorum. Genus: Pterosoma. 

 Pleroteutlii^ Blainv. 1824. Dict. sc. nat. tom. 32. p. 174. 

 et 1825. Malac. p. 367. 

 Efym. TiTeQov, ala; revdlg, lob*go. 

 Subgenus Lobginis. Typus: Lob'go vulgaris Lamck. 

 Syvon. Tevd-og Arist. 

 Pterotracliea Forsk. 1775. Faun. Aeg. Arab. p. 117. * 

 et 1776, Icon. anim. tab, 34. et tab. 43. 

 Etym. meQov, ala; TQaxtia, trachea. 

 Novum genus Molluscorum. 



Pariter Gmel. 1790 in Linn. Syst. ed. XIIL p. 3137. 

 Lamck. 1801. Syst. p. 61. — in Cephalaeis nudis 



natantibus. 

 RoissY 1805. Moll. — in Pteropodis. 

 Lamck. 1812. Extr. d'un Cours. * et 1822. Hist, VIL 

 p. 675. (ed. 2a XI. p. 381.) — in Heteropodis. 

 Pariter Desr. 1832. Enc. meth. III. p. 127. 



PiTiL. 1836. Moll. Sic. p. 242. et 1844. ib. IL 



p. 204. 

 Jay 1839. Cat. shells p. 104. 



