163 



ICARINA. 



320. ? Icarus, Forbes, 1843. Icarus Gravesii. 



Lephocercina. 



321. Lephocercus, Krohn, 1847. Lepho. Sieboldii. 



322. Lobiger, Krohn, 1847. Lobiger Pbilippi. 



Fam. III. PLEUROBRANCHLTLE. 

 Umbrellina. 



323. Umbella, Chemn. 1780. Acardo, Lam. 1801 ; Megerle, 1811. 

 L'ombrelle, Lam. 1812 ; Ferussac. Umbrella, Lam. 1822. Um- 

 braculum, Schum. 1817. Gastroplax, Blainv. Ombrella, Blainv. 

 Patella, sp. Humph., Linn. Patella umbellata. 



N.B. Acardo crustularius, Lam. 1801, E. M. 173. f. 1, 2, is part of 

 the vertebra of a whale : this bone has also been described as Alcy- 

 onium panicenm, Lam. Hist. ii. 400. n. 31. 



Tylodinana. 



324. Tylodina, Rajinesq. ; Blainv. 1825; Philippi, 1836, Joannis. 

 Tylod. punctata. 



Pleurobranchiana. 



325. Pleurobranchus, Cuvier. PI. Peronii. 



Lamellaria b, sp. Montag. Oscanius, Leach MSS. 1819. Pleuro- 

 branchus, Flem. Bulla membranacea, Montag. 

 Discoides, Renieri. 



326. Berthella, Blainv. 1825. Cleanthus, Leach MSS. 1819. La- 

 mellaria b, sp. Montag. Pleurobranchus, sp. Flem. " Laminaria, 

 Gray" Desk. Bulla plumula. 



Pleurobranchus, sp. Cuv. PI. luniceps. 



327. Pleurobranchsea, L,eve, 1813; Cuv. 1817. Pleurobranchus, 

 O/cen, 1815. Cyanogaster, Rudolphi. Pleurobranchsena, Swains. 

 1830,361. Pleurobranchidium, Blainv. 1825 ; Verany. Pleur. 

 Meckelii. 



328. Posteobranchus, B'Orb. 1837. Posteriobranchus, Gray. Post, 

 maculatus. 



329. ? Westernia, Quoy fy Gaim. ; Rang, 1829. 



330. ? Gervisia, Quoy fy Gaim. ; Rang, 1829. 



Fam. IV. PTEROTRACHEID/E. 



331. Anops, D'Orb. 1835. Anops Peronii. 



332. Pterotrachea, Fors/c. 1775; Brug., Cuvier. Pterot. coronata. 

 Firola, Peron §• Lesuevr, 1810; Rang, D'Orb. Fir. Quoyiana. 

 1 Hyptere, Rafinesque. 



Firoloide, Lesueur. Fir. Desmarestiana. 



