of some of the anthocodise are white, of others chocolate red, and both colours may occur 
together. 
o 
Locality: Station 315. > 
Previously recorded from the Philippines, Hong Kong and Amboina. 
8. Dendronephthya mircibilis Hend. (Plate XX, Fig. 1). 
For description see: HENDERSON in Thomson and Simpson’s “Alcyonarians of the Indian 
Ocean”, Part II, 1909, pp. 49—51. 
Stat. 99. 6°7 / .5N., 120 0 26' E. 16—23 M. Lithothamnion-bottom. i Ex. 
Stat. 260. 5 0 36'.5 S., I32°55'.2E. 90 M. Sand, coral and shells. 1 Ex. 
Stat. 282. 8°25 / .2S., i27°i 8 / .4E. 27—54 M. Sand, coral and Lithothamnion. 1 Ex. 
Diagnosis: Divaricate; loose; contour irregular; distinctly flattened; polyps in small 
bundles of about six; polyp stalks medium; supporting bundle medium; point spicules 5 pairs, 
with the uppermost pair slightly projecting; crown absent; grade IV; spicules: many of the 
stalk spicules characterised by the length and strength of their protuberances. 
Anthocodial Grade and Formula : 
IV. = 5 p fl- o Cr medium S. B. 
Descriptive Notes: 
Colony as a whole. A white colony. 
Branching. Loose, divaricate, with irregular contour and very distinct flattening. It should 
therefore be referred to Kukenthal’s cervicornis-gvoup. Yet it agrees in several respects with 
Henderson's D. mircibilis , which he places in the rigida-g roup. 
Colouring. Polyp stalks, spicules of the anthocodial armature and of the supporting 
bundle amber-yellow. 
Polyp stalks not more than 1 mm. long. 
Polyps occur in small bundles of about six in number. 
Polyp spicules. The anthocodial armature consists of 8 double rows of about five pairs, 
converging steeply, and with the uppermost pair slightly projecting, which, we must admit, 
does not agree very well with Henderson’s description and figure. The supporting bundle is 
moderately developed and has about 3 projecting spindles, one of them slightly longer than 
the others. The projecting portion is about a third of a millimetre in length. 
Other spicules. Our chief reason for referring this specimen to Henderson’s D. mircibilis 
is the almost unique appearance of many of the stalk spicules. They are spindles straight and 
curved, spindles approaching clubs and very rough at the broad end, irregular bodies and many 
quadriradiates, all marked by the length and strength of their spines and protuberances, which 
are sometimes compound and often tuberculate. Some of the curved spindles have these prominent 
processes especially strong about the middle, while others are very markedly unilateral, with a 
few tubercles on one side and a great array of long, often divaricate processes on the other. 
These unilateral processes are strongest at one end of the spicule and wane towards the other. 
Among the extraordinary forms, which present an appearance unusual in the genus, there are 
commonplace straight spindles with small regular spines and tubercles. 
Locality: Station 282. 
