1 35 
long naked polyp stalk. There is a marked projection of one or both of the uppermost pair. 
The supporting bundle consists of several long strong spindles; one generally predominates, 
extending beyond the polyp. 
Other spicules. The spicules of the coenenchyma are white and opaque. They consist of long, 
slender, sometimes bent, warty spindles. The general appearance is reticulate and suggestive of 
Kukenthal’s D . fihgrana: As the sterile stalk is absent, it is not possible to ascertain the 
spicules of that region. 
Deduction. Umbellate; Kukenthal’s section B.; spinulosa-gron\). 
26. Dendronephthya lutea Kuk. (Plate III, Fig. 2). 
For description see: KUKENTHAL, Versuch einer Revision der Alcyonarien, II, 1905, p. 689—691. 
Stat. Not recorded. 8 Ex. 
Anthocodial Grade and Formula: 
IV = 2—4 p o Cr strong S. B. 
There are in the collection eight interesting specimens with characteristic features agreeing 
well with D. lutea Kiikenthal except as regards the cortex and canal-wall spicules. 
The polyps are undoubtedly arranged in umbel-like groups; therefore the colonies should 
be referred to the section Umbellatae. The umbels, however, do not form large hemispherical 
masses; and the branches, being of unequal length, do not present a uniform surface. There¬ 
fore the colonies must be included in Kukenthal’s spimilosa-g roup, within which they agree 
well with D. lutea. 
Among the outstanding agreements are the following: 
(1) The lowest branches are conspicuously foliaceous, but there is an elongated sterile region 
between the folia and the polyparium proper. 
(2) The upper branches are “but short and divide with repeated dichotomy”. 
(3) In the upper region “small somewhat markedly diverging polyp-bundles form small upward- 
directed umbels”. 
(4) In general the polyps are on the surface but sometimes they occupy a deeper position. 
(5) The points consist of 2—4 pairs of converging spicules, the uppermost markedly projecting 
while the lowest two pairs occupy a more horizontal position. This is due, however, in some 
degree to contraction. 
(6) The umbellate groups are characterised, as Kukenthal notes, by their divergent outspreading, 
suggestive of a group of antlers. In many cases the branching is more corymbose than 
umbellate. 
(7) The supporting bundle is strongly developed, one spicule sometimes projecting for 2.5 mm. 
but in some cases only 0.6 mm. 
(8) The colour scheme is the same. 
d here are some very striking features in these specimens: 
(1) On the outer surface of the smaller branches there is a distinct strengthening due to a 
grouping of the long spindles. This strengthening is continued into the still smaller branches 
when they divide. It is again continued in the polyp stalk as a supporting bundle. 
(2) The polyp stalk is conspicuously slender and is dominated by the supporting bundle. 
