THE GORGONACEA COLLECTED BY DR WILLEY. 

 By ISA L. HILES, B.Sc. (Vict.), Owens College, Manchester. 



With Plates XXII— XXIII. 



This collection of Gorgonacea has proved a very interesting one, including several 

 new forms. One new species has bet'ii added to that little known genus Keroeides; 

 there is one new species each of Acamptugorgin ; of Avaiit/iogorgia; of Villogorgia; and 

 of Chrysogoryin. 



My thanks are due to Professor Bell for the trouble he took to help me in 

 comparing some of the specimens with those in the National Collection. 



Professor Hickson has very kindly given me much help, especially with regard to 

 the literature bearing on the group. The classification adopted is that laid down by 

 Wright and Studer in the Challenger Report on Alcyonaria (0). 



Section. HOLAXOXIA. 

 Family. Dasygorgidae. 

 Sub-family. Chrysogorgidae. 

 Chrysogorgia constricta, n. sp. (PI. XXII. Figs. 8, 9, 10.) 



There is only one fragment of this species 205 mm. in length. It gives off two 

 branches, one 75 mm. in length which bears a small lateral branchlet, and the other 

 70 mm. above the first and 43 mm. long. The stem is 15 mm. in diameter at the 

 lowest point; the basal part is missing. 



The axis is horny with calcareous particles scattered in broken rings. The 

 coenenchyma is thin. 



The polyps are large, directed obliquely upwards ; they are distinctly divided into 

 two regions by a constriction. The lower region measures 4 mm. high by 3 mm. in 

 diameter where attached; the upper part measures 2'5 mm. by l'5mm. in diameter. 

 The whole polyp is thus 65 mm. high. The polyps arise alternately on the two sides 

 of the axis at intervals of 9 or 10 mm. The branches bear, close to the apex, two 

 polyps, one slightly in advance of the other, and between them is a blunt projection, 

 the actual apex of the branch. 



28—2 



