^^^^^5:55^^555^^^^?^5^555^55S;j,^„^^ 





Fig. 2 Drawn on a much smaller scale than fig. i, from a clam 2.5mm (about one tenth of an inch) long, taken from its burrow, 

 S, G, small sand-grains to which the byssus is attached. Other reference letters as in tig. i. 



