— 294 — 



Pleurobranchiaia Gray 1840. Tur(. Man. ed. 2a p. 77. 



et 1842. Syn. Brit. Mus. p. 64. 90. 

 Etym. virl. praec. 

 Tertius ordo Gasteropodum. Familiae (1842): Bul- 



lidae, Aplysiadae, Pterotracheidae, Umbrellidae, 



Pleurobranchidae. 

 Reeve 1841. Proc. Zool. Soc. p. 75. etl842. Conch. 



syst. II. p. 46. — quartus ordo Gasteropodum. 



Familiae: BuIIacea, Semiphyllidiana, Aplysiana. 



Pariter Catlow 1845. Conch. Nom. p. 112. 

 = T e c t i b r a n c h i a t a et S c u t i b r a n c h i a t a (pars) Cuv. 



Pleiiroltraiicliidae Gray 1840. Syn. Br. Mus. * Ed. 1842. 

 p. 65. 90. 

 Etym. Pleurobranchus. (Pleurobranchidioi- 



dae corr. Agass.) 

 Familia quinta Pleurobranchiatorum. Genera : Pleu- 

 robranchus, Berthella, Pleurobranchaea, Posterio- 

 branchus. 

 = Stegobranchia Riss. 



Pleiiro1»raiiclii«lae D'Orb. 1811. Moll. Cub. I. p. 93. 115. 

 Secunda familia Tectibranchaeorum. — genera: Pleu- 



robranches , Pleurobranchaea , Umbella. 

 Cantr. 1841. Malac. medit. p. 85. — Tectibranchia- 



torum tertia familia. Genera: Pleurobranchaea, 



Pleurobranchus. 



Pleurobraucliiflioidae Agass. 1847. Nom. zool. Ind. univ. 

 vid. praeced. 



Pleiirobrancliicliiini Blainv. 1824. Dict. sc. nat. tom. 32. 

 p. 263. et 1826. Ibid. tom. 41. p. 372. et 1825. 

 Malac. p. 471. (an praec. Meckel 1813?) 

 Etym. P I e u r o b r a n c h u s. 

 Genus Subaplysiaceorum. 

 Desh. 1830. Enc. meth. III. tabl. et 1832. ib. p. 787. 



— genus Pleurobranchorum. 

 Verany 1846. Catal. anim. invert. p. 16. 

 = Pleurobranchaea Meck. 



