197 



are disposed mostly on the two lateral surfaces, but iu some parts occur all 

 round. 



The general colour of the coenenchyma is pinkish-yellow ; the verrucaj are 

 pale yellow. 



The spicules of the verruca^ are warty and spiny spindles, l)ut a few crosses 

 occur. The spindles vary in length from TS mm. to O'l mm. 



The spicules of the C(.enenchyma are not so large, but are of the same 

 types. 



Locality : Gulf of Martaban ; 07 fathoms. 



Previously recorded from " Investigator" Station 246 ; 11° 14' 30" N., 74° 

 57' 15" E. ; OS- 148 fathoms. 



Calicogorgia tenuis, n. sp. Plate III. fig. 10. 



A small complete colony of a creamy-white colour branching irregularly in 

 one plane ; it is (30 mm. in height and 65 nnn. in maximum breadth. The 

 branches show no definite arrangement, nor does the angle of origin appear 

 constant. In one place anastomosis has occurred. 



The axis is of a light brown colour. In the older parts it is comparatively 

 rigid with a diameter of -l-b mm., but in the smaller twigs it is soft and collaps- 

 ible and tapers to a fine point. 



The coenenchyma is thin and allows the pale axis to appear through the 

 transparent spicules. In one place where a cirripede gall is attached the 

 coenenchyma has quite overgrown it. The spicules in the coenenchyma are 

 disposed for the most i)art longitudinally, but the interlocking is very 

 varied. 



The polyi)s are disposed irregularly on two sides and the twigs terminate 

 with a pair at slightly different levels. The verruca are small and wart-like. 

 The spicules are arranged longitudinally, and there is a distinct hint. of grouping 

 into eight sheaves which give a serrate margin to the aperture. The anthocodiae 

 are proportionately large and are completely retractile. They are abundantly 

 supplied with spicules, and the arrangement of these recalls the Siphonogorgid 

 crown and points. This feature, however, is not very definite, so that all one 

 can say is that there are eight longitudinal groups of spicules surmounting an 

 indefinite circumferential aggregate. The spicules are continued into the tentacles 

 on the aboral side and even along the pinnules where they are arranged in 

 inverted Vs. When the anthocodiai are partially retracted the tentacles are 

 infolded and surmount the contracted verruca in the form of an expanded 

 dome. 



The following are the types of spicules with some measurements, length 

 by breadth, in millimetres : — 



