Fig. 1.—Proximal portion of a frond. Note the occluded orifices in the peri-ancestrular region. Off east Otago, 430 fathoms. X 22. Fig. 2.—Part of a frond showing zonation of vegetative (ordinary) and breeding (ovicelled) zooids. Many orifices in the former zone are occluded by calcareous laminae. Off east Otago, 400 fathoms. X 10 (see Fig. 6 for detail). Fig. 3.— Distal portion of frond. The broad breeding zone proximally is followed by a second vegetative zone; interrupted at the seventh row by a resting stage (see Fig. 8). A second breeding zone occurs towards the distal margin, resulting in a renewed expansion of the frond. Cook Strait, 75 fathoms. X 10. Fig. 4.—Proximal-half of a frond, showing the marked curvature typical of its early-formed region. Off east Otago, 420 fathoms. X 10. Fig. 5.—Distal-half of the same frond as in 4. A few ovicelled zooids are present in the anterior region. X 10. Fig. 6.—Same colony as in 2, showing the oral occlusions in detail. X 22.

Transactions of the Royal Society of New Zealand : Biological Sciences, Volume 11, Issue 15, 3 September 1969, Plate 1

Fig. I. — Proximal portion of a frond. Note the occluded orifices in the peri-ancestrular region. Off east Otago, 430 fathoms. X 22. Fig. 2. —Part of a frond showing zonation of vegetative (ordinary) and breeding (ovicelled) zooids. Many orifices in the former zone are occluded by calcareous laminae. Off east Otago, 400 fathoms. X 10 (see Fig. 6 for detail). Fig. 3. — Distal portion of frond. The broad breeding zone proximally is followed by a second vegetative zone; interrupted at the seventh row by a resting stage (see Fig. 8). A second breeding zone occurs towards the distal margin, resulting in a renewed expansion of the frond. Cook Strait, 75 fathoms. X 10. Fig. 4.—Proximal-half of a frond, showing the marked curvature typical of its early-formed region. Off east Otago, 420 fathoms. X 10. Fig. s.—Distal-half of the same frond as in 4. A few ovicelled zooids are present in the anterior region. X 10. Fig. 6.—Same colony as in 2, showing the oral occlusions in detail. X 22.