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Family Tubiporidae. 
Genus Tubipora. 
i. Tubipora musica L. (Plate II, Figs, io and 12). 
For description see: Hickson and HlLES, Willey’s Zool. Results, IV, 1900, p. 493. 
Stat. 60. Samau Island.- Shore. Fragments. 
Stat. 123. Biaru Island. 36—27 M. Stone and Lithothamnion-bottom. 1 Ex. 
Stat. 250. Kur Island. 20—45 M. Coral and Lithothamnion. 1 Ex. 
Stat. 303. Haingsisi, Reef. Fragments. 
Stat. 313. Saleh-bay. Reef. 3 Ex. 
Two well-developed young colonies from Station 313. The larger of the two has a height 
of 1.7 cm., a long diameter of 5 cm. and a short diameter of 3.5 cm. The larger is partly 
entangled with Polyzoon colonies of a Cellaria type. 
A basal portion of a colony of Tubipora musica from Station 250 is overgrown by a 
vigorous specimen of Capnella imbricata (O. G.). 
A fragment with only two tubes from Station 131, Reef. Numerous young pieces, with 
many of the polyps expanded, from Haingsisi (Plate II, Fig. 10). 
A fragment from Station 123 (Plate II, Fig. 12) consisting of a single tube, 1.3 cm. X 2 mm., 
at the top of which spreads a horizontal lamella or platform, 12X7 mm. showing the broken 
bases of five polyps arising from platform solenia, and not continued beneath it. The colour 
of this curious little fragment is of a more scarlet red than in the previous specimens, which 
are all a crimson red. 
Previously recorded from Red Sea, Indian Ocean, tropical Pacific Ocean, West Indies. 
Order ALCYONACEA. 
Family Archicaulidae n. f. 
Genus Protodendron n. g. 
1. Protodendron repens (Thomson and Henderson). (Plate IX, fig. 3). 
= Coelogorgia repens Thomson and Henderson. 
For description see: THOMSON and HENDERSON, Alcyonaria of Zanzibar, Proc. Zool. Soc., 
1906, I, p. 436, 1 fig. 
Stat. 123. Biaru-island. 36—27 M. Stone and Lithothamnion-bottom. 1 Ex. 
Stat. 250. Kur. 27 M. 2 Ex. 
Numerous small white encrusting specimens of an interesting type which seems to us to 
t 
warrant a new genus and indeed a new family, at the base of the Alcyonacean series and 
annectent between Stolonifera and Alcyonacea. 
The peculiar features are the following : — 
(1) The polyps are long (up to 6 mm.), separate, and non-retractile, with completely infolded 
tentacles, but without calyx or operculum. Yet their cavities are in many cases continued into 
