133 



Those of the polyp are more transparent, the point spicules being club- 

 shaped, while those of the crown are curved spindles. They measure in milli- 

 metres : — 



"Point," 1 xO-lf); 09 x 015. 



" Crown," 0-8 x 01 ; 075 x 005 ; 0-5 x 002. 



Tentacles, 0-25 x 002. 



Locality : Andamans, 270-45 fathoms. 



Contrast of S. macrospicuhta and S. media. 



The species ,S'. luarroxpindata, Thomson and Henderson, and .S'. media, n. sp., 

 are sharply defined from all the others, but they exhibit such decided affinities 

 with one another that it has been thought advisable to draw up a tabular 

 summary emphasising the main points of distinction. 



Siphonogorgia palmata, n. sp. 



Belonging to this .species there is in the collection a 1)eautiful characteristic 

 colony 00 mm. in height and 45 mm. in maximum breadth. It is expanded in 

 one plane ; the disc of attachment is 30 mm. long and 11 mm. in breadth. 



The lower 15 mm. consist of an expanded plate, slightly convoluted ; at 

 the top of this it divides into two main parts, while again as a side offshoot still 

 another small lobe is given off. These secondary stems are themselves much 

 flattened and again give off tertiaries of a similar nature — very thick and 

 lobate. 



The whole colony is extremely stiff and rigid and is supported by large 

 thick spindles arranged irregularly in the lower portions but more longitudinally 

 in the tertiaries. 



