BRACHIOPODA. 
Fig. 5. 
79 
l angui d anatina, removed from shell, mantle reflected, coiled arms separated 
lightly!; a, mouth. (Marginal setae omitted.) Ventral aspect, three-quarter 
face. 
Fig.|6. 
V D 
IAngula anatina. Interior of valves showing muscle scars. 
V. Peduncle valve. D. Brachial valve. 
