40 



lies alongside the larger of the two. The spicules of the point are larger than 

 the lower spicules and project beyond the polyp. The lower spicules average 

 about 0'24 mm. in length, the upper projecting spicules about 048 mm. On 

 the aboral surface of each tentacle there are two densely packed rows of small 

 rod-like spicules. 



The Stutzbiindel is well developed, and consists of a number of spicules 

 several of which measure 24 mm. in length and project for a considerable 

 distance beyond the polyp. 



Cortical spicules : {a) In the stem there are long slender spindles with 

 very few inconspicuous spines, and averaging about 08 mm. in length. 



(A) In the stalk there are spindles similar to those of the stem cortex, and 

 averaging about 12 mm. in length, and a smaller series with much larger and 

 more numerous spines. 



Canal-wall spicules : (a) In the stem there are numerous very minute 

 small discs or globular bodies. 



{h) In the stalk there are numerous minute bodies similar to those of the 

 canal walls of the stem. 



Colour — The stalk is semi-transparent ; the stem and principal branches 

 bluish streaked with whitish spicules ; the smaller branches whitish ; the 

 polyp-stalks and the polyps brown. 



Locality : Arakan Coast, 13 fathoms. 



Dendronephthya masoni, Henderson. 



The colony is distinctly divaricate, measures 8 "5 cm. high by 5 cm. wide, 

 is flabby and flaccid, and presents no regular outline. 



The short stalk measures about 15 cm. in length, has a granular appear- 

 ance and gives off" a few short blunt stolons at the base. 



The polyparium is loose, very irregular, and flattened in one plane, the 

 growth seeming to be more towards height than towards breadth. The 

 stem first gives off a series of small branches, which have cylindrical stalks 

 and flattened upper portions, the latter standing at a right angle to the stalks, 

 in umbrella-like fashion. Above these, three leaf-like branches are given off 

 and almost completely suri'ound the stem, leaving only three small open spaces 

 below which the first series of branches are more or less aggregated. The two 

 larger of these branches almost surround the stem, while the third and smaller 

 rises at a lower level. After a short distance the stem divides into three main 

 portions which stand at an acute angle. These portions, in addition to giving 

 rise by several divisions to small branches from which the twigs arise, give off 

 similar small branches all over their surface, as does also the main stem. 



The polyps are arranged in bundles of four to six, but six is the com- 



