96 



in length and 054 mm. in breadth. The spicules are arranged in eight double 

 rows in each of which there are five to six pairs of converging spicules ; the 

 uppermost pair in each row are slightly larger than the others and project a 

 little beyond the polyp. The polyp-spicules are spindles with few short, simple 

 spines and measure on an average 030 mm. in length, the uppermost are 036 

 mm. in length and project 012 mm. beyond the polyp. 



The Stutzbundel is well developed, and contains several large spicules of 

 which two to three always project beyond the polyp, and may measure up to 

 3'3 mm. in length and project 06 mm. 



Cortical spicules : (a) In the stem there are long spindles with few incon- 

 spicuous blunt spines, and in addition a few very small irregular spindles. The 

 spindles vary from 048 to 24 mm. in length, and from 006 to 015 mm. in 

 breadth. 



{b) In the stalk there are spindles, clubs, three-rayed forms and irregular 

 three-rayed forms, all covered with numerous large, rough, prominent, branched 

 thorns. The spindles measure about 036 mm. in length. 



Canal-wall spicules : (a) In the stem there are stringy spindles with very 

 few spines, measuring on an average 0'36 mm. in length and 0'04 mm. in 

 breadth. In addition there are numerous small, stringy, flattened spindles or 

 rods with toothed edges, which measure from 0'03 to 015 mm. in length and 

 about 0001 to 0019 mm. in breadth. 



(h) In the stalk there are numerous spindles similar to those of the stem 

 canal-walls, but on the whole slightly larger. There are also spindles, three- and 

 four-rayed forms, with slightly more numerous spines. These latter give the 

 following measurements : Spindles 0-6 mm. long by 0-12 mm. broad ; three- 

 rayed 06 mm. by 042 mm., and the four-rayed 072 nun. by 048. 



Colour — The stalk is white in its lower half, red in the upper half ; the stem, 

 branches and polyp-spicules of the lower part of the polyparium deep red ; the 

 stem and branches of the upper part of the polyparium white with splashes 

 and streaks of red, while in many parts the polyp-stalks and polyp-spicules are 

 red ; the polyps of the whole polyparium white. 



Locality : Andamans (J. Wood-Mason). 



Dendronephthya harrisoni, Henderson. 



The colony is bush-shaped and measures about 7 cm. in height and 3 5 cm. 

 in maximum width. 



The stalk is long and slender, greatly ridged and wrinkled, and gives 

 off from its base a large number of slender stolons. In texture it is some- 

 what leathery. 



The polyparium is a little irregular owing to the loss of one of the upper 



