PI. I . Faecal pellets of: 1. Cardiomya gouldianu septemtrionalis (Dkr); 2. Plectodon
Zip& (Yokoyama) ; 3. Barbatia obtusoidea (Nyst) a. dorsal view, b. cross section :
4. Anadaru broughtoni (Schrenck) c. dorsal view, d. cross section ; 5 . Modiolus nipponicua (Oyama) e. dorsal view, f. cross section; 6. M. japonicus (Dkr) g . dorsal
view, h. cross section; 7. M . perjragilia (Dkr) i. dorsal view, j. cross section; 8. Septifer bilocularia (L.) k. dorsal view, 1. cross section; 9. S. keenae Nomura-A. Atypical
pellet shed by a starved animal (m. dorsal view, n. ventral view, 0. cross section),
B. Typical pellet shed by a well-fed animal (p. dorsal view, q. cross section) :
10. lsognomon legurnen (Gmel.) r. ventral view, a. cross section; 11. Afrina pectinntu
jnponica (Rve) t,. dorsal view, u. cross section.