44 
Figs. 25, 26 & 27.—Anomia ephippium. 
Right valve. Left valve. 
/, ligamental process in right and ligamental pit in left valve. _s, byssal 
sinus. f, foot. pl, plug or byssus. a! and p’, adductor muscle. p, 
byssal or plug muscle. «, umbo. 
Left side of animal, with mantle lobe removed. 
a, adductor muscle. py, posterior pedal muscle. f, foot. g, gills. J, liga- 
ment. p’, anterior pedal muscle. 0, mouth. %, ventricle. 7, rectum. 
gq, generative organ. m, gill suspenders. 7, reflexed gill edges. 1, 
umbo, 
