WITHIN THE GENUS DENDRONEPHTHYA. 49 



spindles of over 4 mm. (tlie maximum size mentioned for 

 D. gigantea) and projecting for 1*5 mm. ; 



(3) the large spindles of the supporting bundle densely covered 



with minute, blunt thorns, except for the last hnlf milli- 

 metre at the projecting • tip, which is smooth as in 

 D. gigantea ; 



(4) the spindles of the upper cortex frequently reach 4 mm. in 



length, are covered with large, blunt warts, and lie trans- 

 versely ; 



(5) the spicules of the lower cortex and of the canal-walls ; 



(6) the eight anthocodial points are often elongated and have 



the tips meeting over the polyp ; 



(7) the lowest branches of the colony show slight foliation ; 



(8) the colour-scheme of deep orange polyps and white cortex 



was found in some of the described species of D. gigantea. 

 Localities : — 



Station 165 (3 specimens). Station 240 (3 specimens). 

 „ 213 (1 specimen). ,, 261 (2 specimens). 



,, 803 (3 specimens). 



3. Dendronephthya punicea (Studer). 



Described by Studer, Ann. Mag. Kat. Hist. (6) vol. i. p. 70 (1888). 



Diagnosis : — Glomerate : bundles of polyps in rounded clusters ; 

 main stem and main branches little developed ; polyps closely 

 crowded together, polyp stalks medium ; supporting bundle strong : 

 point spicules two only, strong and converging ; crown of about 

 three rows of spicjiles irregularly disposed ; grade VII. ; spicules : 

 upper cortex has big, strong, thick spindles (2 mm.), lower cortex 

 smaller and more thorny forms, including roundish and stellate 

 types ; colour : branches and all spicules scarlet ; polyps pale 

 yellow. 



Anthocodial Grade and Formula : — 



VI. = 2 P + 3 Or + strong S.B. 

 Descriptive JSToxes : — 



1. Colony as a whole. A handsome Glomerate colony, with the 

 bundles of polyps forming rounded clusters, often well separated 

 from one another. 



2. 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 group. 



3. Colouring. Branches and all spicules scarlet while the 

 polyps themselves are pale yellow. 



4. Polyp stalks and their spicules. The polyp stalks measure 

 almost 1 mm. in length, 



5. Polyps closely croAvded together. 



6. Polyp spicules. The anthocodial armature has each point 

 Proc. Zool. Soc— 1922, No. IV. 4 



