')')2 Prof. J. A. Thomson aiid Mr. W. D. IlenJerson on 



Calypter'mus Allmani, Wright & Studer. 



The branches arise alternately on three sides of th^e main 

 stem ; the iridescent axis shines through the thin coenen- 

 cliyma ; the polyps occur in verticels of four, but on one 

 side a bare strip is left which is formed into a canal by the 

 large flat polyp-spiculcs. The locality confirms the suggestion 

 made by "Wright and Studer that this is a deep-sea species. 



Locality. Laccadive Sea, 703 fath. 



Stenella sp. 



The branching is fairly profuse and not confined to one 

 plane ; the axis is brown in colour and horny in texture, with 

 a poor development of calcareous corpuscles ; the spicules 

 are flat scales, straight or curved spindles, spindles sharply 

 bent at an angle, and irregular spiuose forms. The speci- 

 men approaches Stenella acantluna, Wright & Studer. 



Locality. Andaman Sea, 112 fath. 



Thouarella sp. 



The axis is very calcareous, iridescent, longitudinally 

 grooved ; the branches arise on the two lateral faces ; the 

 stiff rigid polyps occur in opposite pairs on the branches and 

 singly on the sides of the main stem ; they are covered with 

 flat scale-like spicules and have eight projecting spines 

 extending considerably beyond the opercular surface ; the 

 spicules are flat, irregular, multi-tuberculate scales, many with 

 a long smooth projecting spine; they are very like those of 

 a Stenella. The specimen approaches Thouarella Moseleyi, 

 Wright & Studer. 



Locality. Laccadive Sea, 703 fath. 



Family Muriceidse. 

 Paramuricea sp. 



A Muriceid consisting of a simple stalk with one clavate 

 branch. The axis is dark brown, with a lighter core; the 

 bluntly conical verrucse arise from three surfaces, those in 

 one row alternating with those in the others. Irregularly 

 arranged spicules cover the polyps ; crown and point spicules 

 protect the tentacles; the whole coeuenchyma is rough with 

 projecting spicules — straight or curved warty spindles, tri-, 

 quadri-, sexradiate forms, spindles with a foliar expansion on 

 one side, and irregular forms. 



Locality. Audamans, 265 fath. 



