307 
of H. hyadesi Perr. from the Paris Museum and of H. pagenstecheri 
from the Hamburg Museum and have thus had the opportunity of 
forming my own opinion about the relation of these two species to 
the Auckland Isl. form. H. hyadesi with its long, siender arms, and 
with its not mono-serially arranged adambulacral and marginal spines 
is so different from the Auckland form that it is seen at a glance 
that they are entirely different. H. pagenstecheri has a considerable 
superficial resemblance to the Auckland form, so that one might 
well at first sight think them one and the same species. A doser 
examination, however, reveals some noteworthy differences. The ad¬ 
ambulacral spines are monoserially arranged as in the Auckland 
form, but the spines of the marginal plates are not thus arranged 
so that we have not here the arrangement of the spines in trans¬ 
verse series from the ambulacral furrow up to the side of the arms 
so characteristic of the Auckland form. Further the inner ad¬ 
ambulacral spine in pagenstecheri is fairly large, horizontally directed 
across the furrow, almost joining that from the opposite side in the 
midline, each pair of the tubefeet thus, as it were, being confined 
within a separate compartment. In the Auckland form the inner 
ambulacral spine is directed vertically, no such compartment being 
formed. Also the interradial areas are more naked in pagenstecheri 
and the depression hardly so distinet. Although agreeing that the 
Auckland form shows a rather considerable resemblance to this 
Magellanic species, pagenstecheri, the characters pointed out seem 
to me so important that there can be no question of regarding 
these two forms as one and the same species. I must thus main- 
tain H. lukinsii Farquhar as a perfeetly distinet species, which is as 
yet known only from the Subantarctic Islands of New Zealand. 
17. Henvicia compacta (Sladen). 
(?) Henricia oceulata Penn. (?) Hutton. 1872. Catalogue N. Z. Echino- 
dermata, p. 7. 
Cribrella compacta. Sladen. 1889. “Challenger” Asteroidea, p. 543. 
PI. XCVI. 1—2; XCVIII. 3-4. 
_ Farquhar. 1898, Notes on New Zealand Star- 
fishes. Trans. N. Z. Inst. XXX, p. 191. 
— — Farquhar. 1898. Echinoderm Fauna of New Zea¬ 
land. Proc. Linn. Soc. N. S. W. p. 314. 
20 * 
