PLATE XXVIII. 
Fig. 1. ANODONTA anatina. 
Anodonta anatina. Lam. Syst. vi. partie 1, p. 85. 
Mytilus anatinus, Mont. Test. Brit. p. I*]!, and 582. — Linn. Trans, viii. p. 110. pi. [3, fig. 1 — Brown in Ency. 
Brit. vi. p. 423. 
Fig. 2. ANODONTA anatina. 
Anodonta anatina, Lam. Syst. vi. partie 1, p. 84. , 
Mytilus Avonensis, Variety found in the River Avon, and in the New River at Hampstead, not uncommon Monl. 
Test. Brit. p. 172 Linn. Trans, viii. p. 250, pi. 3. 
Fig. 3. ANODONTA cygnea. 
Anodonta cygnea. Variety, Linn. Trans, viii. p. 109. pi. 3, fig. 3. 
