271 



(d) Transitions to double-spindles, the bare space becoming smaller and 

 smaller, eventually merging into spindles : — 



0-06 X 002; 006x0015; 007 x 0-015; 0-07 x 002. 

 ((') Very few tetra-radiate forms with distinct x-shaped marking : — 



0-07 X OOS ; 0-035 x 03. 

 (/) Small spindles of the tentacles with few warts in 2 whorls : — 



0-035x001; 0-03x0009. 

 Locality : Andamans. 



(B) A small complete colony, 45 mm. in length and 30 mm. in breadth, also 

 two fragments 40 mm. x 12 mm. and 30 mm. x 30 mm. in length and breadth 

 respectively. They are exjjanded in one plane, and the branches arise almost at 

 right angles and maintain their original course. They ai'e flattened slightly in 

 the plane of ramification. The coenenchyma is finely granular and glistening 

 when viewed under the lens, resembling in many ways a fish roe. The surface 

 is comparatively smooth. The polyps occur all round and are completely re- 

 tracted so that the verruc?e appear as slight undulations on the otherwise even 

 surface. In one of the specimens, however, the verrucic appear as truncated 

 cones and attain a height of almost 1 mm. The colour is dull hrick-red. 



Locality : Andamans, 270-45 fathoms. 



(C) Several small fragments, the largest of which is 70 mm. in height and 50 

 mm. in breadth. The branching is essentially in one plane, but by unequal 

 growth this is sometimes not evident. The branches arise at various angles 

 and are slightly sinuous. The ccenenchyma is moderately thick and presents 

 a glistening arenaceous appearance. The verrucje occur all over the coenenchyma 

 and stand out in relief as low domes. 



The anthocodicc are completely retracted. There is a faint trace of a bare 

 space on the flattened surfaces, but this feature is here and there broken through 

 by an intruding polyp. On the top of the verructe there is a distinct pit, but 

 no trace of a stellate structure is discernible. It is noteworthy that the tips of 

 some of the twigs are almost perfectly smooth, showing that the polyps may be 

 retracted almost to the level of the ccenenchyma. The colour is oclireoas-iiellow. 



Locality : Andamans, 270-45 fathoms. 



(D) A number of portions of colonies. One of these is 55 mm. in height and 

 25 mm. in breadth, and consists of a branch from which several twigs arise at 

 considerable intervals almost perpendicularly. The coenenchyma is moderately 

 thick and has an almost even granular surface. The polyps are disposed irregu- 

 larly around the circumference. The verrucre appear as truncated cones slightly 

 over 1 mm. in height. The tips are paler in colour than the lower portion, 

 which corresponds in colour to the coenenchyma. On one of the twigs we find 

 all stages of retraction from truncated cones 1 mm. in height to an almost in- 

 appreciable undulation at the tip. The colour of the coenenchyma is yellow with 



