A specimen from Station 279, Roma, shows the characteristic spiculation but, perhaps 
due partly to drying, it is rather harder and less rubbery in texture than our other specimens. 
The autozooids are very small and numerous, up to about 14 to a centimetre. The more typical 
number for this variety is about 8 to a centimetre, with about three small siphonozooids between 
two autozooids. In this specimen the siphonozooids are small and not numerous, generally in a 
single row, but sometimes up to 3 between two autozooids. We do not feel justified however 
in separating this into another species. The sterile stalk is short, wide and compressed, 2 cm. 
high with diameters of 6.5 and 1.7 cm. The compressed disc with a folded margin has diameters 
of 7.3 and 2.2 cm. The colour is a greyish brown. 
7. Sarcophytum convolution n. sp. (Plate XI, Fig. 7; Plate XXIII, Fig. 1). 
Stat. 144. Damar-island. 45 M. Coral bottom and Lithothamnion. 1 Ex. 
Stat. 258. Tual, Kei-islands. 22 M. Lithothamnion; sand and coral. 1 Ex. 
Stat. 273. Jedan-island. 1 Ex. 
Two light brown specimens with a marked resemblance to X acutctngulum , but differing 
in spiculation and in the size and number of the autozooids and siphonozooids. The larger spe¬ 
cimen stands 9cm. in height; the capitulum has a maximum diameter of 7 cm.; the sterile stalk 
has a height of about 7 cm., and is strangely compressed, being only about 7 mm. in thickness. 
This is possibly due to some peculiar condition of growth, for instance between two rocks. 
Very characteristic are the numerous folds of the margin, about a dozen main lobes or 
puckerings being distinguishable. The autozooids are prominent, few in number, and distant from 
one another, often by an interval of 5 mm. The siphonozooids are very numerous, very distinct, 
and very crowded. There may be ten in a straight line between two autozooids. It is difficult 
to draw a boundary line between the upper expansions of the stalk and the puckerings of the 
capitulum, but the zooids of both kinds are confined to the upper or capitular surface. 
Rather striking, though probably unimportant, is the close longitudinal striation of the 
surface of the colony below the convoluted margin. 
The spicules include : 
(а) spindles of varied size with compound or with simple warts, sometimes with a tendency to 
zoning; 0.5 x0.04mm.; 0.29X0.05 mm.; 
( б ) slender spindles with relatively few prominences; 0.22 X 0-° 2 mm.; 0.34 x0.02 mm.; and 
(r) rough-ended pseudo-clubs, derivable from the spindle type, 0.06—0.2 mm. in length. 
The specimens differ from A. acutangulum in the following points: (a) the autozooids 
of the new species are much larger and less numerous; (b) the siphonozooids are larger and 
more numerous; (r) the clubs of the new species are less numerous and their heads are less 
well-defined and less warty; (d) the outer surface of the colony beyond the disc is covered with 
a very close longitudinal striation, in part, of course, the expression of strong contraction. 
The specimens show a marked resemblance to Marenzeller’s Lobophytum crebriplicatum 
(Zool. Jahrb. I, 1877, p. 362, 1 fig.); but they cannot be separated from the genus that includes 
X acutangulum. Moreover our specimens differ from that described by Marenzeller as regards 
the siphonozooids, which are very numerous, very distinct, and very crowded. As to spiculation, 
the new species diverges from Marenzeller’s description of his inasmuch as there are numerous 
