155 



intervals of about 8 mm. it oi)ens out and gives origin to small channelled 

 branches. The polyps occur sparsely and indefinitely but chietiy arise in a 

 single row on the margins of the expansions and the smaller branches. A few, 

 however, occur scattered irregularly on the main stalk. The anthocodial arma- 

 ture is very distinct. The collaret consists of three or four horizontal rows of 

 curved spindles forming definite rings. Surmounting this are eight " points," 

 each consisting of two or three pairs of spindles ; these are continued without 

 any break to the aboral surface of the tentacles. In the pinnules the spicules 

 are arranged horizontally. The characteristic Y-shaped spicules are abundant, 

 as also are many irregular spindles. 



The colour of the colony is dull brownish-red but the anthocodiee are 

 brown. 



Locality : Andaman Sea, 41 fathoms. 



C. Two portions of what has evidently been a large colony, the larger of 

 which is 130 mm. in length, the smaller 70 mm. The diameter of the larger is 

 11 mm. In both cases the stalk and main branches are tubular throusjhout but 

 the secondaries are flattened. They arise for the most part in pairs and bear 

 their polyps on the upper and lower sides of these respectively. There is a 

 hint in one place of a tunnel-like expansion or "belt" (Hickson). 



The polyps occur very closely together almost over the whole colony. In 

 the larger specimen they are confined mostly to one aspect, but in the smaller 

 they arise almost all round the stalk. On the smaller branches they are densely 

 crowded and no trace of arrangement can be seen. The verrucas are very strong 

 and have eight definite triangular " points " composed of clusters of spicules 

 which gradually merge from horizontal to vertical. The anthocodial armature 

 is almost identical with that in specimen B. 



The colour of the colony is a dull brownish-red but the polyps are greyish 

 and stand out in bold relief. 



Locality : Arakan Coast. 



D. A magnificent colony 135 mm. in height, 55 mm. in breadth and 40 mm. 

 deep. The basal portion of the trunk is wanting. The stalk is soft and spongy 

 and contains numerous well-defined canals. A peripheral ring is most distinct, 

 while one runs up the ventral surface of the stalk. The colony is expanded 

 entirely towards its ventral as})ect. A marked feature is the expansion in 

 several places into belts from the margin of which arise the greater part of 

 the secondary branches. 



The polyps arise almost anywhere throughout the colony, but for the most 

 part in a single row on the lateral margins of the secondary twigs and also on 

 the margins of the belts. They arise also, however, either singly or in groups on 

 both sides of these belts. 



The verrucse are large, distinct and dome-like and are over 1 mm. in height. 



