14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 



Type & Synonym 

 P. ephippiimi (Ostrea ephippium. 

 Linn.) 

 §Genus founded by Bruguiere, 1789 [non Perna, 

 Retzius, 1788]. Adopted by Lamarck, Prod. 

 80, genotype P. ephippium [sic], Lin. The 

 same citation occurs in Lk. Syst. 134. 

 [Generic name preceded by Isognomon, So- 

 lander, 1786, Melina, Retzius, 1788, and 

 Isogonum, Bolten, 1798.] 

 36 62 Malleus M. albus 



§Genotype, Lk. Prod. 82, is Ostrea niaUeiis, Lin. 

 Specific name changed in Lk. Syst. 133 to 

 vulgaris. 



36 62 Avicula 



Z7 ^Z A. crocea. 



§Bruguiere created the name in 1792 for un- 

 named figures. Lamarck, Prod. 82, cited 

 Mytilus hirundo, Lin., but changed the specific 

 name unnecessarily in Lk. Syst. 134 to 

 communis. A. crocea was a species of much 

 later date. Cuvier 1798 (Tabl. 422) adopted 

 and defined the genus citing three species. Of 

 these we here nominate A. hirundo, Lin., as 

 the type. 

 [Genus preceded by Pteria, Scopoli, 1777.] 



37 63 Mcleagrina M. margaritifera {Mytilus mar- 



garitiferus. Linn.) 

 § [Genus preceded by Pinctada, Sect, i of Bol- 

 ten, 1798.] 



38 64 Pedum P. spondyloideum (Ostrea spon- 



dyloidea, Gmel.) 

 §Bruguiere created the name for figures in 1792. 

 Lamarck adopted and defined it, Prod. 88, 

 with sole species and genotype Ostrea spondy- 

 lo'idea, Chemn. [or rather Gmelin], which is 

 repeated in Syst. 136. 

 38 64 Lima 



