PLANCHE I. 



Fig. 1. — Ojjhioty pa simplex Kcehler, face dorsale. Gr. = 10. 



Fig. 2. — Ophiotypa simplex, vue lat^rale. Gr. = lO. 



Fig. Z.~ Ophiotypa simp>lex, face ventrale Gr. = 10, 



Fig. 4. — Ophiopyrgus Alcochi Kcehler, foce dorsale. Gr. = 8. 



Fig. 5, — Ophiopyrgus Alcocld, vue laterale. Gr. = S. 



Fig. 6. — Ophiopyrgus Alcocki,i3ice ver\\jXdle. Gr. = 8, 



Fig. 7. — Ophiomastus tumid us 'KcBhXev, face dorsale. Gr. = 9. 



Fig. 8. — Ophiomastus tumidus, vue laterale. Gr. = 9. 



Fig. 9. — Ophiomastus tumidus, face ventrale. Gr. = 9. 



