Zoophytes from Australia and New Zealand. 113 
showing obviously that they were dead specimens when first 
obtained. 
The pinnae are in no case bifurcate or branched in any way, 
but show traces of an approach to the whorled or spiral ar¬ 
rangement so characteristic of the other species. 
The stem is seen upon section to be a simple hollow tube; 
and the pinnae are united to it by distinct joints. With this 
exception the zoophyte is jointless. 
EXPLANATION OF THE PLATES. 
Plate XVI. 
Fig. 1. Sertularella neglecta, sp. nov. 
Fig. 2. Sertularella (?) fruticosa, Esper; 2 a, upper part of hydrocaulua 
of S. fruticosa, natural size. 
Fig. 3. Sertularella exigua, sp. nov. 
Fig. 4. Sertularella, sp. 
Fig. 5. Sertularella ramosa ; 5 a, the same, natural size. 
Plate XVII. 
Fig. 1. SertulariaJlexilis, sp. nov.; 1 a, the same, natural size. 
Fig. 2. SertulariaJlosculus, sp. nov. ; 2 a, the same, natural size. 
Fig. 3. Sertularia minima, sp. nov., magnified one third more than the 
other species; 3 a, S. pumila, Linne, outline magnified to the 
same scale as the figure of S. minima ; 3 b, S. minima , a colony, 
natural size, attached to a piece of seaweed. 
Fig. 4. Sertularia australis, Kirchenpauer ; 4 a, the same, natural size. 
Plate XVIII. 
Fig. 1. Sertularia, sp.; la, the same, side view of the hydrothecm ’ 
1 b, the same, natural size. 
Fig. 2. Sertularia elongata, Lamouroux ; 2 a, the gonangium, magnified 
to half the scale of fig. 2 ; 2 b, the same, natural size j 2 c, S. 
elongata, var., natural size. 
Fig. 3. Sertularia pulchella, sp. nov.; 3 a, the same, natural size. 
Plate XIX. 
Fig. 1. Sertularia insignis, sp. nov.; 1 a, the gonangium. 
Fig. 2. Thuiaria ambigua, sp. nov.; 2 a, the same, natural size. 
Fig. 3. Pericladium novcc-zclandice, sp. nov. ; 3 a, the same, natural size. 
Note. 
The above was written and had left my hands prior to the pub¬ 
lication of M. Mereschkowsky’s paper in the ‘Annals’ for De¬ 
cember 1878. According to the method followed in that paper, and 
originally suggested by the llev. A. M. Norman, my Pericladium 
novce-zelandice should be referred to the genus Selaginopsis , of 
which it would then constitute the only example yet recorded from 
the southern hemisphere. 
The hydrotkecae on the axial stem occur in nine or ten longitu- 
Ann. & Mag. N. Hist. Scr. 5. Vol. iii. 8 
