88 



The Stutzbundel is well developed in certain polyps, where one of the 

 spindles may reach a length of 2'4 mm. and may project 04 mm. beyond the 

 polyp, in the others they average about 1 mm. In both types the tips of 

 two or three more project slightly. 



Cortical spicules : (a) In the stem there are long spindles, either straight 

 or curved, and covered with regularly arranged rough blunt spines or thorns. 

 They vary in length from 045 to 2-5 mm., and from 007 to 024 mm. in 

 thickness. 



(/>) In the stalk the spicules are very varied in form, short, thick spindles 

 which often show bifurcation at one end, short clubs, thick, cylindrical forms 

 with three or more rays at one end, three-rayed forms, small incipient four- 

 rayed forms, simple thick and broad flat rods, and numerous irregular to 

 star-shaped forms. All are covered with rough warts, many of which are 

 much branched. 



The spindles average about 11 mm. in length and 015 mm. in breadth, 

 but spicules of over Id mm. are also present. The cylindrical forms average 

 about 07 mm. and the clubs 048 mm. in length. 



Canal- wall spicules : (a) In the stem there are long spindles with a few 

 prominent spines, measuring up to 1-2 mm. in length by O'lS mm. in breadth. 



(h) In the stalk there is the same diversity of shape as in the cortex ; 

 short thick spindles, three-rayed forms, a few clubs and a type of spindle 

 which has two large flat expansions in close proximity to one another, on one 

 surface. The spindles may be straight or curved, or even S-shaped, and vary 

 in length from 0-24 to 18 mm. in length, and in breadth from 012 to 036 mm. 

 The spindles with the foliar expansions may reach a length of 09 mm., while 

 the clubs average about 0o6 mm. in length and 0-18 mm. in breadth. In 

 addition to the above there are smooth, flat si)indles and star-shaped forms. 



Colour — The colour of the stalk is pinkish-white with the lower part 

 yellowish-white ; the main stem white, with here and there short streaks of 

 red ; the lower parts of the branches pinkish-white, the upper parts red ; 

 the polyp-stalks and polyps white ; the Stutzbundel white with a faint pink 

 tinge in parts. 



Locality : Gregory Islands, Mergui Archipelago. 



To this species is referred another colony which measures 7 cm. in height 

 and 4 5 cm. in greatest breadth. 



Locality : Y6, Burma. 



Dendronephthya tripartita, Henderson. 



This species is represented by a small colony which measures 4 cm. in 

 height and 3 cm. in maximum width. 



