PLATE VI. 



Fig. I. Siiberogorgia pulclira n. sp. Natural size. \a, part of branch X 5- 



Fig. 2. Siiberogorgia thomsoni n. sp. Natural size. 2a, tip of twig ••: 5. 



Fig. 3. Koraides koreni Wright and Studer. Natural size. 3«, tip of branch •' 5. 



