PLATE XII. 



Fig. I. Placogorgia dendritica n. sp. Natural size. \a, part of branch x 5- 



Fig. 2. Placogorgis squamata n. sp. Natural size. 30, part of branch X 5. 



Fig. 3. Placogorgia cryptotheca n. sp. Natural size. 3«, part of branch X 5. 



Fig. 4. Placogorgia dentata n. sp. Natural size. a^a, part of branch X S- 



