146 
the proximal part of the arm, the number gradually decreasing to- 
wards the point of the arm. 
The eggs are rather small, only c. 0,i mm. 
The specimen from North Cape differs from those from Camp¬ 
bell Island in having much finer scales on the aboral side of the 
disk, the central plate alone remaining distinet; also the radial 
shields are a little smaller and narrower. As I do not find any 
other characters by which to distinguish it from the typical form, 
I do not hesitate in referring it to the same species. If the differ¬ 
ences noted in the scaling and the radial shields prove constant, 
it may well be distinguished as a separate variety — but the 
material available does not allow judging of the constancy of this 
feature. 
The species shows a considerable resemblance to Amphiura 
incana Lyman, from Cape of Good Hope. (“Challenger“ Ophiur- 
oidea, p. 128, PI. XXXIII, figs. 5—7). The broad outer oral papilla 
of A. incana and the different configuration of the oral and adoral 
shields would appear, however, to afford good distinguishing char¬ 
acters, to which must be added the difference in the shape of the 
ventral plates which are — judging from the figure given by 
Ly man — distinetly broader in incana than in amokuræ, and the 
number of the spines, eight in incana, six (seven) in amokuræ, 
These differences would seem to put the specific distinetness of 
the two forms beyond all doubt. 
After this was written I received from Professor Ben ham two 
specimens of this species, dredged in Otago harbour, 2 fms; VI. 
1923. They agree very well with type specimens from Campbell 
Isl., only the arms are somewhat longer, ca. 7 times the diameter 
of the disk. Also a young specimen from Lyall Bay and one from 
Timaru, collected by Mr. W. R. B. Oliver in 1907, prove to belong 
to this species. — It is very satisfactory thus to have demon- 
strated the occurrence of the species at the coast of the South Is¬ 
land of New Zealand. This faet, together with the above statement 
of its occurrence at North Cape, leaves no doubt that it will prove 
to oceur all along the New Zealand coasts. 
