294 THE VOYAGE OF H.M.S. CHALLENGER. 



Spongodes, Lessou. 



The species have oulj' been fouud in the Indian and the Pacific Oceans. In the 

 former they have been found in the Red Sea, in the latter they have a very much 

 extended range, occurring off Port Jackson, at the Fijis, Tahiti, then at the Philippines, 

 off the coast of China and Japan, as far north as the Loochoo Islands. For a review of the 

 distribution of the known species, see p. 225. 



Paranephthya, Wright and Studer. 

 Paraneijhthya capitulifera has been found at the Admiralty Islands. 



Sderonephthya, Wright and Studer. 

 The only species, Sderonephthya pustulosa, occurs at Japan. 



Chironephthya, Wright and Studer. 



The three species, Chironep)hthya clipsacea, Chironephthya scoparia, and Chirone- 

 phthya crassa, were found at Japan. 



Siphonogorgia, Kolliker. 



The species of this genus would appear to be confined to the Pacific Ocean. Sip>hono- 

 gorgia godeffroyi, Kol., Pelew Islands; Siphonogorgia koUikeri, Amboina; Siphonogorgia 

 mirahilis, Khmz, the Red Sea; Siphonogorgia mir'ahilis, Klunz, var. Rid., north-west 

 coast of Australia, au^l Siphonogorgia squarrosa, Std., North-West Australia. 



Family III. Alcyonid^. 



Bellonella, Gray. 



There is at present great difficulty in knowing what species to refer to this genus, so 

 that the geographical distribution is not easily determined. The species are apparently 

 of the temperate zone. 



Nidalia, Gray. 



Dr. Gray's ha];)itat for the only species, Nidalia occidentalis, Gray, is " in littore 

 Oceani Atlantici apud Montserrat in India Occidentali." 



