9 6 
The polyps are not as densely crowded as in many Nephthyas, the stem being frequently 
visible between two polyps. A polyp has a height, measured on the outer side, of 0.5—0.8 mm., 
a breadth of 0.65—0.7 mm., a polyp-stalk of about 0.6 mm. ; it is borne at right angles or at 
a slightly acute angle to the stalk. The supporting bundle is strong and does not project, often 
curving round the polyp head; it consists of about 6 — 8 strong, rather twisted spindles, up to 
1.2 X0.1 mm., covered with numerous fine warts. The polyp armature consists of chevron rows 
of 3—5 pairs of thorny bent spindles, about 0.2 mm. long, and on the inner side of polyp and 
stalk a close mass of irregularly arranged small, rather smooth rods about 0.08 mm. long and 
0.001 mm. broad. 
The spicules of the canal walls are stout pointed spindles, up to 0.9x0.12mm., with 
few simple warts, also some triradiates. In the rind are found ( a ) strong massive spindles with 
numerous compound warts, many with long sharp thorns on one side (0.85 X o 1 mm. ; 0.53 X o. 1 mm.); 
others are slightly curved, twisted, or bent sharply in the middle, often with the spines markedly 
developed on the convex side; 
( b ) club-like forms with large spines at one end ; 
( c ) smaller irregular forms (average length 0.15 mm.) with few long, generally blunt, outstanding 
processes. Some of these irregulars are crescents with two basal processes, approaching the 
* 
Lemnalia quadriradiates. 
A very badly preserved colony from Station 301, with a height of 5.4 cm., shows the 
same features of spiculation and polyp structure, but the whole colony is withered and twisted, 
and it is difficult to judge the shape and size of the lappets. 
Genus Dendronephthya. 
In 1922 Prof. W. Rae Sherrtffs published a paper in the Proceedings of the Zoological 
Society, N° III. pp. 33—77 on “Evolution within the Genus Dendronephthya (Spongodes)” 
based on the examination of ninety-three specimens belonging to this collection. These specimens 
he referred to twenty-two species, including three new species. There are, however, one hundred 
and twenty other specimens in the collection, and these are here incorporated. 
We have confirmed the majority of the conclusions arrived at by Dr. Sfierriffs, but 
have felt compelled to establish two new species for specimens which he referred to two already 
described species, viz. D. clavata and D. cervicornis. These we now refer to D amoebisclera n. sp. 
and D. halterosclera n. sp. respectively. Of the remaining twenty species we have examined 
eighty-two other specimens, belonging to ten species. 
There are, however, in addition to the specimens belonging to these twenty-two species, 
thirty-eight others which we have referred to ten species, five of which are new. On page 104 will 
be found a list of all the species in the collection with the number of specimens and the localities. 
All who have worked at Alcyonarians- will agree as to the difficulties presented by the 
genus Dendronephthya or Spongodes. For here we have to deal with a multitude of species 
within a relatively narrow range. Thus Kukenthal, in his “Versuch einer Revision der Alcy- 
onarien: II. Die Familie der Nephthyiden, 2 Teil”, 1905, deals with no fewer than eighty-seven 
species; and Henderson, in the “Alcyonarians of the Indian Ocean”, Part II. 1909, with 
