9 
A colony of creamy grey polyps from Station 33, up to 1 cm. long, arising from a 
membranous base which encrusts a solitary Madrepore, has tentacles with long pinnules, about 
24 on each side. 
Another fine cream-coloured colony from Station 37, with a membranous base encrusting 
a piece of Madrepore coral. 
A rather withered colony from Station 248, Tiur, seems referable to this species. The 
polyps, up to 1 cm. long, arise in a crowded mass from the basal membrane. The pinnules 
are rather long and narrow and give a somewhat fluffy appearance to the tentacles even in 
their shrivelled condition. The spicules attain a length of 0.05 mm. 
Previously, if our identification is correct, from Diego Garcia, Chergoo Archipelago. 
2. Anthelia glauca (Ehrb.). 
For revised description see: Kukenthal, fiber einige Korallentiere des Roten Meeres; 
Jenaische Denkschriften, XI, 1904, p. 43, 2 figs. 
Stat. 60. Haingsisi. 23 M. Lithothamnion. 2 Ex. 
Stat. 81. Sebangkatan. 34 M. Coral bottom and Lithothamnion. 2 Ex. 
Stat. 89. Kaniungan Ketjil. Reef. Numerous Ex. some fragmentary. 
Stat. 152. YVunoh-bay. 32 M. Lithothamnion-bottom. 1 Ex. 
Stat. 252. Taam. 27 M. 1 Ex. 
Stat. 315. Anchorage East of Sailus Besar, Paternoster-islands. Up to 36 M. Coral and Litho¬ 
thamnion. 1 Ex. 
A colony of a creamy colour, from Station 81, with a membranous basis spreading over 
a coral, with crowded polyps, the surface glistening with spicules, sometimes with faint longitudinal 
ribs, rising to an average height of 8 mm., the tentacles being about half as much more. 
The characteristics of this species, as revised by Kukenthal, who includes with it 
A. strumosa (Ehrb.), Sympodiiun fuliginosum (Ehrb.) and S. piirpurascens (Ehrb.), are chiefly 
the following: — Stolons usually broadened into a membrane; polyps 1 — 2 cm. in length; two 
rows of about 12 pinnules on each side of the tentacles; numerous calcareous granular rodlets; 
colour very variable, light yellow, light grey, blue-green, reddish. 
Several pinkish colonies from Kaniungan Ketjil show some less contracted polyps with 
distinctly longer and narrower pinnules, which may be fifteen on each row; but even this is 
included within the limits of Kukenthal’s diagnosis. From the examination of numerous specimens 
we conclude that very little importance can be attached to minor variations in the number and 
disposition of the pinnules. The rodlets of the pinkish forms are slightly longer, 0.06 mm. instead 
of 0.05 mm.; but the limits Kukenthal records are 0,05 — 0.09 mm. 
In a few specimens from Taam, 27 M. there is this difference, which cannot be regarded 
as more than individual, that along with the rodlet spicules there are many definitely narrower 
(o. i X 0.006 mm.), approximating to the blunt needle type. Moreover, the rodlets have more 
numerous minute asperities. 
A small colony from Station 60, Haingsisi, consists of stout cream-coloured polyps, about 
1 cm. long, with tentacles bearing 16 —17 pinnules on each side, mainly arranged in a double 
row. Numerous granular rodlets are present. 
SIBOGA-EXPEDITIE XIII d. 
2 
