PLATE IX. 



Fig. i. Nicella carinata n. sp. Natural size. \ a, part of branch ;. 



Fig. 2. Nicella coralloides n. sp. Natural size. 2a, part of branch 5. 



Fig. 3. Plumigorgia hydroides n. sp. Natural size. 3a, part of colony 5. 



Fig. 4. Ellisella flava n. sp. Natural size. 4«, part of branch 5. 



