82 
3- Umbellulifera petasites n. sp. (Plate I, Fig. 4; Plate XXI, Fig. 11). 
Stat. 19. 8°44'.5 S., ii6°2 / .5E. 18 — 27 M. River-mud, coral, coral sand. 1 Ex. 
Stat. 79. 2°43'S., H7°44'E. 41— 54 M. Fine coral sand. 1 Ex. 
We refer to this species two specimens, one from Station 79 and one from Station 19 
(Labuan Tring, Lombok). The first has a sterile stalk, 21 cm. in length, a basal diameter of 
2.5 cm. and an average diameter of 1.3 cm. At the top of stalk there arise, almost at the 
same level, five main branches. These immediately ramify and the ends of the small twigs bear 
the umbels. The polyparium is 6 cm. in width and 3 cm. in height. It is compact and cauli¬ 
flower-like. The colour of the coenenchyma of the stalk and branches is white, but the spicules 
of the polyps are reddish; and this gives the polyparium a decidedly pinkish appearance. 
The spiculation of the polyp stalk is sparse, but on the outer surface there sometimes 
occur two or even 3 longer red spicules, a distinct hint of strengthening. 
The spicules of the anthocodiae are arranged in eight en chevron rows. In each row 
the number varies from 5 — 8 pairs, but 6 is most frequent. These narrowing chevron rows 
become almost parallel towards the tentacles. 
The lower portion of the sterile stalk is densely spiculose, but this spiculation diminishes 
upwards, so that at the top and in the branches, spicules are practically absent. There are a 
few warty spindles in the canal walls. These attain a length and breadth of 2.6 mm. and 0.25 mm. 
The spicules of the outer cortex of the sterile stalk include the following characteristic forms: 
(a) irregular capstans with each end extended into four or so compound bosses, the middle part 
of the capstan being more or less bare; minute simple capstans are probably the young 
stages of the large irregular forms; 
(p) very rough irregular forms having compound knobs all over, thus approximating to very 
rough double spheres. 
In another specimen from Labuan, the long sterile stalk extends for 16 cm., and bears 
a dense polyparium 2.1 cm. in height with a diameter of 3 cm. As regards anthocodial armature 
and the spicules of the sterile stalk this specimen agrees with the others. 
Genus Nephthya. 
i. Nephthya albida (Holm). 
For description see: 
KUKENTHAL, Versuch einer Revision der Alcyonarien, II Nephthyiden (I), Zool. Jahrb. XIX, 
1904, p. 160. 
HOLM, Beitr. zur Kenntniss der Alcyonidengattung Spongodes. Zool. Jahrb. V, 1895, p. 30, 3 figs. 
Stat. 213. Saleyer. Up to 36 M. Coral reefs, mud and mud with sand. 1 Ex. 
A bushy white colony, 8 cm. high, with a basal spread of 5.7 cm. and a maximum 
spread of 11 cm. 
If Kukenthal’s scheme be followed it should be ranked near N . albida , for it has conical 
lappets, terminally rounded; the polyp-spicules are smaller internally and consist of smooth rodlets. 
It agrees with N. albida in the following features : 
(a) an ensheathing supporting bundle does not project ; 
