660 ADDITIONS AND CORRECTIONS. 



VOL. PAGE 



n. 422, for " Timoclea, Leach," read " Cytherea, Bolten ;" 



Timoclea, Leach, is a synonym of Chione. 

 ,, 434, Papilla, Bolten, is a synonym of Callista, not of Tapes. 

 ,. 436, for " Metis, H. and A. Adams," read " Myrsus, H. and 



A. Adams." 

 439, California should be added to the localities given for 



the genus Trapezium. 

 444, for "Asmidia, Gistel," read " Armida, Gistel." 

 451, for " Musculium, Link," read " Pisurri, Miihlfeldt ;" 



Musculium, Link, is a synonym of Sphcerium. 

 ,, 455, for " Cerastoderma, Poli," read " Cerastoderma, 



Morch ;" Cerastes and Cerastoderma, Poli, are 



synonyms of Cardium. 

 ,, 482, Stephanopus, Scacchi, is a synonym of Solemya. 

 ,, 501, Limnoica, Leach, is a synonym of Anodonta. 



514, Pisina, Morch, is a synonym of Crenella. 

 533, Thyas, Gray, is a synonym of Area. 

 534, line 6 from bottom, for " Arcs" read " Arks." 

 ,, 535, for " Acar, Gray," read " Daphnoderma, Morch, not 



Poli," which name has priority. 

 ., 545, add species "nucleus, Linn." to list of species of 



Nucula. 

 ,, 546, for " Leda, Schumacher," read " Nuculana, Link." 

 ,, for " Fam. Ledidtc," read " Fam. ~Nuc%danid<z." 

 for " Sub. -fam. Ledines," 1 read " Sub-fam. NucularrincB." 

 ., 566, Ephippium, Bolten, and Sellaria, Link, are synonyms 



of. Placuna. 

 582, for " Hermithyris, D'Orb.," read "Hemithyris, D'Orb." 



