Bate.—Hydroids from the New Zealand Coast. 239 
he gonangia are very large (about 4-3 mm. in length and 1-8 mm. in 
diameter), and their form is very distinctive. Looking at them from the 
back or the front the longitudinal depression is not noticeable, except 
perhaps on the top, but seen sidewise it gives the impression of two longi- 
tudinal ridges. The aperture, before opening, can only be distinguished 
by an extremely fine suture. 
imen was about 8 in. high, with two Mtm branches near 
the base, where the stem was about 2 mm. in thickness 
Sertularella depuis vue 
Sertularia joh 1843, p. 294: Hutton, 1872, p. 256: Coughtrey, 
1874, p. P Hilgecdort, 1897, oe 207. 
lari n, 18 ы 
har 
Hartlaub, 1900, pp. 22, 30, е. ; 1905, p. 6 = Billard, 1910, » "s ‘in Б: 
Bale, 19148, p. 25: Jüderholm, 1916-17, x 
illaris Allman, 1885, p. 133. 
Sertularella ео Kirchenpauer, 1884, p. 49: Bale, 1886, p. 36. 
Symplectoscyphus australis Marktanner-Turneretscher, 1890, p. 226. 
Not 2 —À "m 1884, p. 109; 1893, p. 102; which I have later referred to 
аа (1900) banido S. capillaris, S. purpurea, S. australis, along 
8. joh d in 
S. pygmaea Bale, as synonyms of S. johnstoni. I ha 1886 referred 
8. purpurea to that species, but 1 think that 8. pygmaea is nearer to 
S. divaricata. Billard agrees with Hartlaub, after examining 8 speci- 
mens of S. johnstoni and S. capillaris, the latter d which = mee has 
three teeth on the hydrotheca, not four as Allman states. Billard also 
Mech S. divaricata as synonymous, but I hav neris reasons for dis- 
senting from this view (19143), with. ‘which opinion Jäderholm concurs 
Type ‘specimens of Hutton’s S. subpinnata were received from the 
n Museum, and Professor Chilton sends typical specimens of S. john- 
stoni from Island Bay. 
Sertularella columnaria Briggs. 
Briggs, 1914, p. 293. 
Hitherto this species is only recorded from near Cape Pillar, Tasmania. 
· A single fragment occurs in Professor vos s collection, but ‘the part of 
New Zealand from which it came is unce 
The species seems to bear the same yalotiopship to the johnstoni group 
that S. gigantea does to the rugosa group; its gonosome, however, is 
unknown. 
Sertularella pygmaea Bale. 
Bale, 1881, p. 25; 1884, p. 108; 19146, p. 25: Farquhar, 1896, 
р. 464: Hartlaub, 1900, pp. 30-32 (under S. johnstoni). 
Considered by Hartlaub to be a form of S. johnstoni. (Vide Bale, 
145.) 
