124 



arrangement not very distinct ; spicules projecting beyond bases of tentacles. 

 Tentacles with double rows of deep red spicules. 



" Colour — Stem and main branches white ; secondary branches and twigs 

 yellow ; below the bunches of polyps the spicules show a red core, and there 

 is a gradual transition fi-om yellow to red ; polyps red. 



" Hah. : Bay of Bengal." 



Sub-family, Siphonogorginae. 



Siphonogorgia variabilis ( = Chironephthya variabilis, Hickson). 



,, macrospiculata ( = Chironephthya macrospiculata, Thom- 



son and Henderson). 



,, mirabilis, Klunzinger ( = S. pustulosa, Studer). 



,, macrospina, VVhitelegge. 



„ rotunda, Harrison. 



,, media, n. sp. 



,, palmata, n. ap. 



„ annectens, n. sp. 



„ asperula, n. sp. 



,, duriuscula, n. sp. 



Scleronephthya flexilis, n. sp. 

 Stereacanthia indica, Thomson and Henderson. 



„ armata, n. sp. 



Cactogorgia celosioides, Simpson. 

 „ expansa, Simpson. 



„ alciformis, Simpson. 



Incertse sedis : — B.actylonephthya granulata, n. gen. et sp. 



GENUS SIPHONOGORGIA, KolUker. 



Hickson in the " Alcyonaria of the Maldives," Part I., p. 487, drew atten- 

 tion to the possibility of uniting the two genera SiphoniMioniia and Chlnmeplithiia. 

 He pointed out that such characters as (1) the distribution of the polyps and 

 (2) the retractility of the anthocodite, given by Wright and Studer as diagnostic 

 of Chironephthya, are quite untenable. At the same time he drew attention to 

 the anthocodial armature and distinguished between an " en chevron " and a 

 " fan-like " arrangement in the "points". He says: " It is probable from the 

 literature of the subject that in most of the species of Srphonogorgia the ar- 

 rangement of these spicules is similar to this," viz., fan-like. 



An examination of a large number of specimens has, however, convinced 

 us that this is untenable, as in a single colony both types, with intermediate 

 forms, were found. 



The distinction based on the mode of growth, i.e., Nephthyid-like in 



