REPORT ON THE POLYZOA. 
93 
(9) Salicornaria gracilis, Busk. 
Salicornaria gracilis, Bk., Brit. Mus. Cat., vol. i. p. 17, pk lxiii. fig. 3. 
Salicornaria punctata, Bk., Vo y. of Rattles., vol. i. p. 366. 
Gellaria gracilis, Macgilliv., Nat. Hist. Viet., Dec. v., p. 50, pi. xlix. fig. 4. 
(?) „ attenuata, d’Orb. 
(?) „ tenella, Lamk. 
(?) „ salicomioides, Savigny, Egypte, pi. vi. fig. 7. 
Character. — Zoarium slender, small ; joints nodular, dichotomous. Areas hexagonal; 
internal ridges prominent ; surface granular. Orifice semicircular or subcrescentic. 
Operculum semicircular, sometimes with a crescentic granulated area, 0"’0035 x ‘0025. 
Avicularian mandible large, semicircular, more or less angular above. 
Habitat— Station 186, lat. 10° 30' S., long. 
142° 18' E., 8 fathoms, coral mud. 
[Off Cumberland Island, Cape Capricorn, Yoy. 
of Rattles. ; Queenscliff, Sealer’s Cove, Muller.] 
At one time I was inclined to regard Salicornaria 
gracilis as merely a variety of Salicornaria johnsoni, 
a species to which it bears, in some respects, a strong 
resemblance, and it would be difficult, from the 
external characters alone, to decide the question. 
Close re-examination, however, more especially of the 
chitinous parts, shows that the two are quite distinct. 
The accompanying figures will show the differences 
that exist in the opercula and mandibles of the two forms, whilst at the same time they 
will demonstrate how closely the corresponding parts represent each other. But there is 
another particular in which the specific diversity is plainly represented. In the Atlantic 
Salicornaria johnsoni the articulations are composed of straight tubes, as they are in 
Salicornaria farciminoides, Salicornaria sinuosa, and some others belonging to the 
northern hemisphere, whilst in the Australian form the joints are what I have termed 
“ nodular,” — the more common mode as already observed in the southern species of the 
genus. 
Fig. 13. — A, Salicornaria gracilis ; B, Salicornaria 
johnsoni. 
y. inarticulate . 
(10) Salicornaria magnijica, n. sp. (PI. XII. figs. 4, 6). 
Character. — Zoarium radicate, 1 or 2 inches high, continuous, branched on one 
side only, at very uniform distances, branches sometimes forked at the extremity, slightly 
compressed. Areas oblong or elongated hexagons, arched above, and from O'^OS to ’05 
