70 NATURAL HISTORY OP 



This feature Prof. Allman makes a family characteristic 

 of the Bougainvillidce. 



1. B. EAMOSA, Van Beneden. 



Eudendrium ramosum (F. B.), Tubularia ramosa 

 {Dal.), Medusa Ocilia and duodecilia [Daly), Atractylis 

 ramosa (T. 8. W. and McA.), Margelis ramosa {Ag.). 



Hab. : Queensferry {T. 8. TF.), Oban, Torbay {T. H.), 

 Northumberland {Aid.)., Devonshire Coast {All.). 

 Height 1 — 3 in. Stem straw colour, much branched. 

 Polypites pale pink, with 12 — 20 white tentacles. 

 Gonophores borne on the branchlets on long peduncles. 



This species is not unlike Halecium in appearance 

 {Aid.). The polypite when retracted is almost con- 

 cealed by a cup in which the polypite-beariug branch- 

 lets terminate. 



2. B. FRUTICOSA, All. 



Eudendrium ramosum {All., A. N. H., July, 1864). 



Hab. : Kenmare River, co. Kerry, and Firth of Forth 

 {All). Height 2 in. 



This species very much resembles the preceding. 

 It is, however, more slender, and. the body of the 

 polypite is not so completely retractile into the pro- 

 tective extension of the polypary. 



3. B. Muscus, All. 

 Perigonimus muscus {All.). 



Hab. : Torquay {All). Height ^ in. Stem con- 

 sisting of a simple tube, light yellowish-brown in 

 colour, and with the polypary slightly wrinkled. 

 Polypites light reddish-brown, with about 16 tentacles. 



This zoophyte somewhat resembles B. ramosa, from 

 which, however, its small size and simple ramification 

 readily distinguish it. 



