EXPLANATION OF PLATE LXXXVIIL 



Fig. 1. — Sertularella adpressa, sp. nov,, part of branch, with 

 gonangiurn seen from the anterior, Station 54— x 50. 



Fig. 2. — Sertularella adpressa, sp. nov , part of branch, with 

 gonangiurn, seen in lateral aspect. Station 54 — x 50. 



Fig. 3. — Lictorella concinna, sp. nov., colonies, Station 44 — 

 Nat. size. 



ITig. 4. — Lictorella concinna, sp. nov., part of branch, with hydro- 

 thecse, Station 44 — x 55. 



Fig. 5. — Lafoea tenellula, AUman, sections of stolon, with hydro- 

 thecse, Station 57 — x 70. 



Fig. 6. — Sertidarella turgida (Trask) (1), part of stem with hydro- 

 thecse, Station 57 — x 24, 



Fig, 7. — Sertularella longitheca, Bale, typica, part of stem with 

 hydrothecee, Station 57 — x 24. 



Fig. 8. — Sertularella longitheca, var. robusta, var. nov., part of 

 stem with hydrotheca and base of branch, Station 48 — 

 x24. 



Fig. 9. — Sertidarella adpressa, sp. nov., part of branch with 

 hydrothecse, Station 54 — x 77. 



