Volume I Part 39 (2/2)

15. S. tridentata, n. sp.

2. Pasythea.

16. P. hexodon, n. sp.

3. Plumularia.

-- 1. Angiocarpeae.

17. P. huxleyi, n. sp.

18. P. hians, n. sp.

19. P. delicatula, n. sp.

20. P. aurita, n. sp.

21. P. brevirostris, n. sp.

22. P. ramosa, n. sp.

23. P. divaricata, n. sp.

24. P. phoenicea, n. sp.

25. P. longicornis, n. sp.

26. P. macgillivrayi, n. sp.

-- 2. Gymnocarpeae.

27. P. effusa, n. sp.

28. P. campanula, n. sp.

Fam. 2. CAMPANULARIADAE.

4. Campanularia.

29. C. volubilis (?) 30. C. dumosa.

5. Laomedea.

31. L. torressii, n. sp.

Order. ANTHOZOA HYDROIDA.

Suborder. SERTULARINA.

Fam. 1. SERTULARIADAE.

Gen. 1. Sertularia, Linnaeus.

1. Cells alternate (Sertularia).

a. Cells distichous.

1. S. elongata, Lamouroux.

Habitat: Swan Island, Banks Strait, thrown on the beach. Port Dalrymple, on stones at low water. (Also New Zealand.)

2. S. divaricata, n. sp.

Cells urceolate-subtubular, or very little contracted towards the mouth, often adnate to the rachis nearly their whole length; mouth looking upwards, with three large acute teeth, two lateral, and one rather longer than the others, and slightly recurved, above. Ovicells ---- ?

Habitat: Ba.s.s Strait, 45 fathoms, dead sh.e.l.ls.

Colour dirty yellowish white; polypidom branched, from a common stem; branches irregular (?) straggling, pinnate and bipinnate, pinnae and pinnules divaricate at rightangles, alternate; rachis flexuose, or with an angle at the origin of each pinna. The cells are placed at wide distances apart; small and adnate very nearly to the top. The mouth circular, with three large teeth, the one above frequently obscured by advent.i.tious substances, very acute, ascending, and a little recurved.

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