15 



This species is generally more brancbcd than the branched 

 variety of T, Larynx, and usually in an alternate manner. 

 The branches do not rise from the trunk at such an obtuse 

 angle as in the last; the tubes are smaller, more dense, of 

 a deeper colour, and do not present such decided rings as 

 T, Lar^-nx. The polype heads are red, mouth conical, with 

 a single circle of tentacula. Ellis' figure in his "Essay oa 

 Corallines" is very good and characteristic. 



T. RAMEA. Arborescent, stem and branches formed of 

 agglutinated filiform tubes, irregularly branched. Polypes, 

 with a single row of tentacula. 



Tubularia llamea, Johnston's Brit. Zooph , p. 117, pi. 5, 

 figs. 1 and 2. 



Hab, On Pinna lagens, south of the Deadman point. 



The appearence of this species is so remarkable, as to ren- 

 der a fair specimen difficult to be confounded with any other. 

 It is very bushy and very closely resea)bles a miniature tree. 

 I have a fine specimen from eight leagues off' the Deadman 

 point, eight inches high. It is very stout, rigid and of a daik 

 brown colour. The chief branches and trunk are composed 

 of many agglutinated tubes, which decrease in number as the 

 branches divide ; the ultimate or terminal branches are 

 composed of a single tube with one or two aunulations at the 

 origin of each. I have not observed the polypes but they 

 are said to have a single row of white tentacula. The routs 

 are matted togetheur like a coarse sponge. 



SERTULARIADtE. 



Polypes geramiparous, the gemmules enclosed in ovarian 

 persistent vesicles, scattered on the polypidom. 



THOA, Laniouroux. 

 Generic Character: Polypidoms rooted, arborescent; the 



stem composed of aggregated sub-parallel capillary tubes; 



the branches alternate, spreading biiariously ; cells tubular, 



indistinct, alternate; ovarian vesicles irregularly scattered. 



Polypes hydraform, scarcely retractile within their ceils. 



HERRING-BONE CORALLINE. T. Halecina. Cells 

 oval, vasiform, contracted near the mouth; mouth subier- 

 minal and somewhat patulous. 



Corallina scruposa pennata, cauliculis crassiusculis rigidis, 

 Raii Synop., vol. 1, p, 3G. Herring-bone Coralline, Ellis' 

 Coral., p. 17, no. 15, pi. x. Sertularia halecina, Ellis and 

 Solander's Zooph., p. 46, no, 15. Turton's Lin., vol. 4, 

 p. 678. Stewart's Elem., vol. 2, p, 442. Fleming's Brit. 

 An., p. 542. Templeton in Mag. Nat. Hist,, vol. y, p. 46«. 



