PLATE XXXa. 
PENTACRINUS NARESIANUS, 0. Sp. 
Fig. 1. The youngest specimen obtained, 
Fig, 2. One of its internodal joints, 
Fig. 3. One of its nodal joints; upper face, 
Figs. 4, 5. Two fragments, probably from the lower part of the stem 
of this specimen, . 
Fig. 6. Portion of a full grown stem, . 
Fig. 7. One of its internodal joints, 
Fig. 8. The inner.face of an arm from the third to the eighth brachials, 
Figs. 9, 10. Two syzygial joints from the arm of a young individual, 
as seen from the side (fig. 9) and from above (fig. 10), 
a. The epizygal. 
b. The hypozygal. 
Figs. 11, 12. Similar views of a full grown syzygial pair, 
Diam. 
10 
10 
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