60 



from 0"04 to 021 mm. in breadth. There are also some smaller spindles with 

 very few and simple thorns. 



(b) In the stalk there are long, curved or straight spindles with very 

 regularly arranged prominent and often branched warts. They sometimes 

 give ort' a short branch about the middle of one side, and vary in length from 

 03 to '24: mm. and in breadth from 0'12 to 0-21 mm. 



Canal-wall spicules : (a) In the canal walls of the stem there are spindles 

 with numerous regularly arranged prominent warts on their surfaces. They 

 vary in length from 09 to 1"2 mm. and average about Olo mm. in breadth. 

 In addition there are a few spindles, stringy or pitted in appearance, with few 

 protuberances or none, and averaging about 27 mm. in length and 03 mm. 

 in breadth. 



{/>) In the stalk there are curved or straight spindles, with numerous more 

 or less regularly arranged branched warts on the surface, a few clubs and a 

 number of iri'egular star-shaped forms, all bearing rough warts similar to those 

 on the spindles. In addition there are flat, smooth spindle-shaped to star-shaped 

 forms. The spindles average about 1 mm. in length and 0"15 mm. in breadth. 



Colour — The stalk is yellowish in its lower portion, yellow-white above ; 

 the stem and principal branches white with a tinge of yellow ; the smaller 

 branches and twigs yellowish : the polyp-stalks and polyp-spicules rose-coloured ; 

 the tentacles white. 



Locality ; Andamans. 



Dendronephthya persica, Henderson. 



The specimen is large, measuring (3 cm. in height and almost 5 cm. in 

 maximum width. The stalk is short and the polyp-bearing portion is greatly 

 flattened in one plane and fairly compact in appearance. 



The stalk or trunk is about 1 cm. in length, and has its upper portion 

 hidden by the reflexed flattened branches. It is thick and nuich wrinkled 

 and has a flat base of attachment from the edges of which a few stolons are 

 given off. 



The polyparium is regularly oval in outline, compact in appearance, and 

 consists of a number of branches of about equal length. From the lower part 

 of the stem a few small branches are given off, and then above this two 

 branches are given off' in the same plane, at slightly different levels on opposite 

 sides of the stem. Of these branches one is much larger than the other, and 

 above their origin there is no division of the stem into main branches. The 

 lower branches are flattened, fold-like or leaf-like structures, two of them being 

 much larger than the rest, and almost surrounding the stem, leaving only a 

 small free space between the edges. In the free space on one side two small 



