SCATOLO(:ICAL STUDIES OF THE BIVALVIA (MOLLUSCA)
335
Fig.
C
B
, 5. Faecal pellets of: A. Portlandiella beringii (left, ventral view ; middle, cross-section; right, dorsal view) ; B. Saccella sematensis (left, dorsal view; right, ventral
view; below, cross-section) : C. ?Limopsis tajimae ; D. Glycymeris imperialis (above,
ventral view ; middle, cross-section ; below, dorsal view) ; E. SpondyZu.9 candidus
(above, dorsal view ; below, cross-section).
69. Amusium japonica (Gmel.) (Pl. 4-43)
'' Faeces of this species are composed of filamentous cylindric rods
loosely entangled and gathered by mucus t o form masses of indefinite