132 



doubtful if Orthocera and other allied fossil genera are Decapodous, 

 or Dibranchiate Cephalopods. 



The arrangement follo\ved is that w'hich \vas proposed in the Syn- 

 opsis of the Contents of the British Museum for 1838, and which 

 has been gradually modified in the difFerent editions, as I have be- 

 come better acquainted \vith the animals of the different genera ; and 

 one or t\vo alterations have been made for the šame reason in this 

 edition of the list. It is founded on the examination of the animals 

 of all the molluscans contained in the London and Paris coUections, 

 as \vell as of all the drawings or engravings of the animals \vhich I 

 have been enabled to see, exceeding more than five thousand species, 

 being at least one hundred times as many animals as were known 

 when Lamarck jiroposed bis system, and fifty times as many as were 

 knovvn to Cuvier when he published bis system in the ' Animal 

 Kingdom.' 



Fam. I. STROMBID^. 



l.Strombus, Linn. 1754, Lam. 1801, Montf. 1810; not Strombus, 

 Broicne, 1756. Alatse, Gevers. 1787. Alatus, Humph. 1797. 

 Lambis, Bolten, 1798. Strombus pugilis, Linn. 



Conchilium, Broivne, 1756. Strombus gigas. 



Canarium, Schum. 1817. Strombidea, Sivaiiis. 1840. St. urceus. 



Pterocera a, Schum. 1817. St. latissimus. 



Strombus /3, Schum. 1817. St. epidromis and St. auris Dianse. 



2. Pterocera, La7n. 1801. Strombus Pterocere, Blainv. Lambis, 



sp. ^o/^e??, 1798. Pteroceras, So2»., iSwatH«. 1840. Aporrhais, 

 Rondel. Strombus, Humph. 1797. St. lambis. 



Pteroceres, Montf. 1810. Pterocera /3, Schum. 1817. St. scorpius. 



Harpago, Klein, 1783. St. Chiragra. 



3. Fusus, Humph. 1797. Rostellaria, Lam. 1801, Schum. 1817. 



Rostellum, Montf. St. clavus. 

 Strombus fissm-ellus, Linn. 

 Hippochrenes, Montf 1810. Hippocrena, Schiveiff. 1820. Hip- 



pocrenes, Brown, 1824. Hippocrene, Latr. 1825. Rostellaria^, 



Blainv. 1825. St. amplus, Brander. 



4. Seraphys, Montf. 1810. Terebellum, sp. Lamk. Yoluta, sp. Oken, 



1815. Bulla sopita, B. volutata, Brander. 

 Terebellum, Lam. 1801, Montf. 1810, p. 379 (uot 11), noi Browne, 

 1756. Bulla Terebellum. 



Fam. II. MURICIDiE. 

 a. Tritonina. 



5. Apollon, Montf. 1810. Ranella granifera, Laink. 



Ranella, Lam. 1812. Rana, Humph. 1797. Bufo, Montf. 1810, 



not Daud. Murex gyrinus, lAnn. 

 BufFonaria, Schum. 1817. M. spinosus. 

 Gyrina, Schum. 1817. Apollon, Blainv. Murex reticularis, Linn. 



