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Siphonogorgia duriuscula, n. sp. 

 A small massive colony 23 mm. in height and 6-5 mm. in diameter at the 

 base. There is a short stalk from which three almost equal, lobate branches 

 arise ; on these the polyps are borne ; the largest is 17 mm. in length and 

 4 mm. in diameter. There are numerous canals in the stem, so that this species 

 approaches the " Chironephthya-type " ; several of these canals are almost equal. 

 The general arrangement of the spicules is altogether longitudinal ; the spicules 

 18 



