io8 
anthocodiae are yellow. In the three small colonies the general colour of the coenenchyma is 
whitish, the supporting bundle red and the anthocodiae canary yellow. The general appearance 
is red with numerous yellow blobs. 
Polyp stalks. Very short. 
Polyps. In clusters of from 4— 10. 
Polyp spicules. The anthocodial armature consists of 4 — 6 pairs markedly en chevron, 
but there is very little, if any, specialisation in the uppermost pair. There is a strong supporting 
bundle of 4 — 5 pairs of chevroned red spicules. The base of the supporting bundle fades away 
into the coenenchyma. 
Other spicules. The spicules of the sterile stalk include ( a ) very thorny spindles, straight 
and curved, of many different sizes and varying greatly in degree of thorniness ; ( 5 ) short thick 
derivatives of the spindle type, with prominences exaggerated on one side; (r) very irregular 
thorny forms with long thorns projecting in all directions ; ( d ) occasional somewhat regular 
four-rayed small forms. 
Deduction : This species must be referred to grade III. which includes D. studeri and 
D. gigantea ; but it differs from any of the species described for that grade. In many respects 
this species agrees with Nephthya debilis Kiikenthal, but it is undoubtedly a Dendronephthyci 
since the polyps are grouped in hemispherical bundles. Thus, since we have not been able to 
examine Ivukenthal’s specimen, we prefer to make a new species rather than transfer N. debilis 
to the genus Dendronephthyci. 
3. Dendronephthyci ptinicea (Studer). (Plate XIX, Fig. 10). 
For description see: STUDER, Ann. Mag. Nat. Hist. (6), 1888, vol. I, p. 70. 
Stat. 273. Anchorage off Pulu Jedan, East coast of Aru-islands. (Pearl-banks). 13 M. Sand 
and shells. 1 Ex. Unrecorded, 2 Ex. 
Diagnosis : Glomerate 5 bundles of polyps in rounded clusters • main stem and branches 
little developed; polyps closely crowded, polyp stalks medium; supporting bundle strong; point 
spicules two only, strong and converging ; pseudo-crown of about three rows of spicules irregularly 
disposed; grade VI.; spicules: of upper cortex, big, strong, thick spindles (2 mm.); of lower 
cortex, smaller and more thorny forms, including roundish and stellate types. 
Anthocodial Grade and Formula: 
VI = 2 P -{- 3 Cr -j- strong S. B. 
Descriptive Notes : 
Colony as a whole. A handsome Glomerate colony, with the bundles of polyps forming 
rounded clusters, often well separated from one another. 
Branching. There is relatively little development of the main stem and main branches 
as compared with the stalks of the bundles of polyps composing the clusters. It is therefore 
one of the hemprichi-grou p. 
Colouring. Branches and all spicules scarlet while the polyps themselves are pale yellow. 
Polyp stalks. The polyp stalks are almost 1 mm. in length. 
Polyps closely crowded. 
