PLATE XX. 
Page. 
Pig. 1. P acliydomus Icevis, J. D. Sowerby — -Lateral view of specimen ... ... ... 214 
Fig. 2. Edmondia nohilissima, L. Gr. tie Koninck — Lateral view of specimen ... ... 211 
Fig. 2a. The same, seen from above ... ... ... ... ... ... ... ... 211 
Fig. 3. Oardio?norj>ha sf?'iafeUa, 1 j. G. de Koninck — Lateral view of specimen... ... 210 
Fig. 3a. The same, seen from above ... ... ... ... ... ... ... ... 210 
Fig. 4. Edmondia intermedia, L. G. de Koninck — Lateral view of specimen ... ... 212 
Fig. 5. Pleuropliomis Morrisii,lj. Gr. diQ K-omndk — Lateral view of specimen ... ... 221 
Fig. C. Mceonia elongata, J. D. Dana — Lateral view of specimen ... ... ... 219 
