PLATE XVII. 



Page 



Fig. 1. Primnoella distans, Studer. Natural size, . . . .85 



Fig. la. ,, ,, Polyps ; enlarged. 



Fig. 2. ,, magellanica, Studer. Polyps ; enlarged, . . .83 



Fig. 3. ,, biserialis, n. sp. Polyps ; enlarged, . . .87 



Fig. 4. ,, grandisquamis, n. s]). Polyps; enlarged, . . 86 



