LAMELLIBRANCHIA. 
Moll 87 
the physical conditions arc more favourable to the oyster, but there also 
moderation is needed in order that the number may not be diminished. 
Auster u. Austernwirthschaft, chiefly third and ninth chapters, pp. 13 
& 56. 
Notes on oyster-breeding on the shores of Germany by Mobius, Cir- 
culare des deutschen Fischerei-Vereius, 1877, pp. 54-62 ; in France, 
pp. 179-182. A translation of pp. 19 & 20 in the Californian newspaper 
“ Democrat.” 
The violet colour of some oysters at Arcachon had been examined by 
Descourt, C. R. Ixxxv. pp. 969-971. 
B. L. Bally proposes the use of hard substances, which eventually 
become soft, for fixing young oysters. Assoc. Fran 9 . iv. Nantes, 
pp. 812-814. 
Ostrea plicatula (Gm.) = crenulifera (Sow.) = cucullina (Desh.) = 
denticulata (Born) — barclayana (Sow.) = deformis and cornucopias 
(Lam.) = cucullata (Born) = forsJcali (Gmelin), and five chief varieties 
of it (a) pinnicola^ (b) tridacnicola, (c) crenulifera^ (d) ftpongicola, and (e) 
forshali, all in the Red Sea ; Pagenstecher, in Kossmann’s Zoologische 
Ergebnisse, i. pt. ii. pi. xvi. figs. 1-16. 
