“N 
ee) 
PLATE LIL. 
Figs. 1-6. METACRINUS TUBEROSUS, n. sp. 
Portion of the stem, 
Lower face of a supra-nodal joint, 
. Upper face of a nodal joint, 
. An ordinary internodal joint, . 
Lower face of an infra-nodal joint, 
Side view of a nodal joint and the two upper joints of the in- 
ternode below it, . 
Figs. 7, 8. Rutzocrrnus RAWSONI, Pourtalés. 
. A young specimen with the arm-bases slightly displaced at the 
syzygy between the first and second brachials, 
. The upper part of the stem, with the calyx and first brachials 
of a slightly older individual, 
Diam. 
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