OSTREID/E. 
173 
Syrski (in Wien, landw. Z.) describes the not very encouraging results of 
his endeavour to breed oysters at Grade, in the Adriatic Gulf (reprinted in 
Zool. Gart. xii. pp. 211-214). 
Ostrea {Grypheen, Lam.) angulata seems to do well when introduced from 
the Tagus into the oyster-beds of Arcachon : Fischer, Act. Soc. L. Bord. xxvii. 
p. 81. 
Ostrea gigas (Thunb.) var. and cucullata (Born), Japan : Lischke, J. M.- 
Conch. ii. pp. 160 & 161 ; the first figured in pi. 14. 
Anomiid^. 
P/flctma (Brug., 17^2)— Placenta (Retz., 1788, II. & A. Adams, ncc Klein, 
1734) ; and Placuna (H. & A. Adams) is renamed Placunema, with type P. 
sella (Gmel.) ; together forming a new family, Placunidce. Stoliezka, Pal. 
Ind. iii. pp. 460 & 451. 
