TASMANIAN llYKKd/.nA lilJltHiS. 



•29:'. 



H-,le\ recent exainiii;iti..n of speciinens from sevei'i.l Austr:.- 

 li,n. localities lu.s establislied the identity between Sninhn'l „ 

 ,i;r,n-n-ah, (Husk), var. .nlnlirhnhn.in, Hale, and ihe South 

 American and Antarctic Srrf.h,n'lln snIJIrh.l.n.n, Kucl.en- 

 pauer. 



SKKTn.AKKl.l.A CoMIMXAKl A, >•/'. ii"r. 



(Fig. 1.) 

 Tronl>o,n,^,r.—Co\ouY attaining a lieigl.t of 05 en. , stem 

 straitrl't 1-5 mm. in'diMmeter ai the base, fascicled below, 

 springing from a clump of bydr..rl.i/al tubes and bea.-mg 

 regularly arranged long, monosipbonur branches, tin- hrst ol 

 which arises 11 mm. above the base of the colony. J l:e 

 branches reach a length of 29 mm. Stem and branches he m 

 one plane The stem is divided into regular mternodes 



Fig ].-Ser(,</ayrna columnaria, sp. nov. Portion of branch with hydrothec«, x 19. 



separated by oblique joints which slope successively in oppo- 

 site directions. Each internode bears a hydrotheca or a 

 hydrotheca and a branch. The stem gives rise regularly to a 

 bi-anch and two hydrothecae on one side, and one hydrotheca on 

 the other. The branches are alternate, and spring, with a 

 long internode, from directly beneath a hydrotheca. They are 

 sli-htly constricted at t,heir origin. In the branches the nodes 

 nmy become obscured, although a constriction immediately 

 distal to a hydrotheca geuerally indicates their position. 



