— 25 — 



Meg^aloflon J. Sow. conlin. 



Noviiin genus Mytilaceorum fossiliuni. 



Adoptat Bronn 1837. Leth. p. 90. 



G. B. Sow. jun. 184-2. Conch. Man. ed. 2a p. 186. 



— genus Ciirdiaceorum. 

 MoRRis 184:3. Brit. foss. p. 91. 

 Gkinitz 1846. Grundr. d. Verst. p. 430. — genus 



Astartidnrum. 

 Synon. Buenrdites (sp.) S(;hloth. 

 Cardium (sp.) Goldf. olim. 

 IMegalodus Goldf. 

 IflesalodtBH Goldf. 1837. Petref. Germ. II. p. 183. Conf. 

 Bronn in Leonh. et Br. Jahrb. 1838. p. 108. 

 Eiym. Vid. praec. 

 = Megalodon Sow. 

 ]7Iegaloma$$tonBa Guild. testeSwAiNS. 1840. Mal. p. 186.336. 

 Efym. /iityag, magnus; Xiof^ia, margo; otS/na, os. 

 Subgenus Cyclostomae. Typus: Cyclostoma crooea 



Gmel. 

 Similiter Gray teste Sow. jun. Conch. Man ed. 2a 

 p. 186. 

 ]TIegaptei*ygia Latr, 1 825. Fam. nat. 



Etym. /iieyag, magnus; nteQv^, pinna. 

 Primus ordo Pteropodum. Familiae : Procephala, 

 Cryptocephala. 

 Megarima Desh. Sow. jun. Agass. vid. Megorima Raf. 

 Itlesarites Rafin. 1831. Cont. Mon. Biv. * > Feruss. 1835. 

 Bull. zool. p. 23. 

 Efym. /ifyaQOv, domus. 

 Genus Atremosiorum. 

 Iflesaspira Lea (1834 — .38.) Observ. IL p. 21. 



1838. Trans. Amer. phil. Soc. VL part. 1. * :> 

 Troschel in Wiegm. Arch. 1839. 11. p. 224. Cf. 

 Sow. jun. Conch. Man. ed. 2a p. 187. 

 Etym. i-iiyag, magnus; anaiQa, spira. 

 A Pupis disjunctnm genus. Typus: Pupa elatior 

 Spix. 



Vol, II. 2 ^ * 



