l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 



Genus Type & Synonym 



Placuna P. sella (Anoniia sella. Linn.) 



§Bruguiere founded the genus, 1789, without 

 species named. Adopted by Cuvier 1798 

 (Tabl. 418) with two species of which we 

 here select P. placenta, Lin., as type. Lamarck, 

 Prod. 82, and Lk. Syst. 135, cite the same. 

 [Same generic name used by Solander, 1786, 

 for which Iredale, 191 5, proposed the same 

 type.] 



45 71 Anomia 



46 72 A. cphippiuui (Idem. Linn.) 



§Lk. Prod. 83 and Syst. 138 cite it as A. cphi- 

 pium [sic]. 



47 73 Sphaerulites S. foliacea 



§SoIe species: now ranked as a synonym of 

 Radiolifcs. 



47 73 Radiolites 



48 74 -^- rotiilans [sic, Lmk. wrote rotii- 



laris] 

 §Genotype, Lk. Syst. 130 is R. augciodcs, n., 

 which in the Hist, is divided between rotidaris 

 and ventricosa. 

 48 74 Birostritcs B. incqndoha 



§Sole species: founded on an internal cast of 

 Radiolites. 

 1823, July 



220 84 Hyalcca H. tridcntata {Mouocuhis tcle- 



inns ? Linn.) 

 §Genotype, Lk. Prod. 89, is Anoniia tridcntata, 

 Forsk. Specific name changed unnecessarily 

 in Syst. 140 to cornea. 



221 85 Clio [No shell.] 



§ [Genotype, Lk. Syst. 61, is Clione borealis, 

 Pallas. Non Clio, Lin., 1767. The valid ge- 

 neric name is Clione, Pallas, 1774.] 

 221 85 Clcodora C. pyramidata {Clio pyraniidata. 



Linn.) 

 §Stet. Genus founded in 1810 by Peron and 

 LeSueur, but species given there in vernacu- 



