PLATE V. 
Honopvs RANG, d’Orbigny. 
Diam. Page 
Fig. 1. The articular facets of the radials viewed from above, sx 33 202 
Fig. 2. Horizontal section of the radials, 2 mm. below the edges of 
the two bivial facets. This is an inferior view of the ring 
of united radials shown in fig. 1, : : = ae 200 
Fig. 3. Vertical section through the lower part of the cup, . DZ 201 
Fig. 4. Horizontal section through the lower part of the cup, about 
5 mm. above the basal expansion, : ; ex 3 200 
Fig. 5. The calcareous network forming the peripheral portion of the ») 
cup, : - ; : ; : ee eke) | =. 200 
Shinty 
Fig. 6. The calcareous network forming the inner faces of the radials, x 45 | p, 200 
ar) 
~ 
Fig. 7. Portion of a horizontal section through the cup, showing the c a 
. 5 | «4 
relations of the two kinds of network, . é . aX SIZ e200 
a, 
Fig. 8. Ideal representation of the more regular network forming the | = 
outside of the cup, : : ; } Se GSOs 200 
Figs. 9, 10. The youngest individual dredged by the “ Blake,” . x (20 204 
Fig. 9. From the side. 
Fig. 10. From above. 
