PLATE XII 



Fig. i. Camptoplites bicornis var. quadriavicularis var.n. Part of type 

 specimen. St. 160, Shag Rocks. X4. Secondary branches show 

 best on the long left-hand branch which carries three on the part 

 that is clear of the rest of the colony. Avicularia, both long-headed 

 and round-headed, are visible in this figure and in figure 2. 



Fig. 2. Camptoplites bicornis var. quadriavicularis var.n. St. WS871, 

 off Patagonian Shelf. X3-8. Secondary branches show best at the 

 right of the proximal end of the main piece, and on the detached 

 piece to the left. 



Fig. 3. Camptoplites angustus (Kluge). St. TN 340, Ross Sea. X4. 

 There is an axillary secondary branch in each axil. 



Fig. 4. Camptoplites rectilinearis sp.n. St. TN 314, McMurdo Sound. 

 x 4. Some ovicells are visible. Note that the two axillary rootlets 

 project frontally. 



