303 
1. Adambulacral plates with only one outer spine. 2 
_ — three or more outer spines. 3 
2. The jaws with a pair of prominent, horn-like outer spines; 
five more rarely six, rays. A. regularis. 
No outer spines on the jaws. Six rays. A. gunnii. 
3. Furrow-spines three; outer adambulacral spines three. 
A. novæ-zelandiæ. 
_ generally 5—6 ; outer adambulacral spines 
nnmprnii«; . A. Liucklandensis. 
15. Stegnastev inflatus (Hutton). 
PI. XIII. Fig. 11. 
Pteraster inflatus. 
Palmipes — 
Stegnaster — 
Hutton. 1872. Catologue Echinod. New Zealand. 
p. 10. 
Perri er. 1875. Revision Collect. Stellérides Mus. 
Paris. p. 291. 
SI ad en. 1889. “Challenger” Asteroidea. p. 778. 
Farquhar. 1895. Notes on New Zealand Echino- 
derms. Trans. N. Z. Inst. XXVII. p. 199. 
Farquhar. 1898. On the Echinoderm Fauna of New 
Zealand. Proc. Linn. Soc. N. S. Wales, p. 312. 
Farquhar. 1909. Further Notes on New Zealand 
Starfishes. Trans. N. Z. Inst. XLI. p. 126. PI. XII. 
1 specimen was collected on the rocks of Island 
Bay, Wellington, 17/11. 1915. Further I have received 
from Mr. W. R. B. Oliver some specimens collected 
at Rangitoto, Takapuna and Browns Bay, Hauraki 
Gulf. 
To the very careful description given by Perrier 
I would only add that the inwards pointing spines 
on the oral interradial plates are peculiar in being 
glassy, not of the structure common in starfish spines. 
(Fig. 14). This also holds good of Stegnaster Wesseli 
(Perr.), the type species of the genus. 
Perrier writes that this species appears to 
“soulever ordinairement la partie centrale de son 
corps, de maniére que les extrémités des bras et les 
bords du corps reposent seuls sur le sol; l’animal 
Fig. 14. 
Stegnaster 
inflatus. 
Part of oral 
interradial 
area, with the 
peculiar glassy 
spines. 
