153 
large number of coronal plates developed already at this young 
age (— the genital pores have not yet appeared —) indicates that 
it is a form of small size. 
4. Aræosoma thetidis (H. L. Clark). 
Asthenosoma thetidis H. L. Clark. 1909. Notes on some Australian and 
Indo-Pacific Echinoderms. Buli. M. Comp. Zool. Lll- 
p. 134. 
Aræosoma — A. Agassiz & H. L. Clark. 1909. Hawaiian & 
other Pacif. Echini. Echinothuridæ. Mem. Mus. 
C. Zool. XXXIV. p. 176. PI. 66, figs. 6 -17. PI. 68-70. 
— H. L. Clark. 1916. „Endeavour“ Echinoderms. 
p. 107. 
Astropyga radiata F. Jeffr. Bell. 1917. British Antartic („Terra Nova“) 
Exped. 1910 Zoology. Vol. IV. 1. Echinoderma. p. 6. 
This species was dredged by the “Terra Nova“ Expedition 7 
miles E. of North Cape, 70 fms. It was not taken in my own 
dredgings in the sea to the North of New Zealand, but having had 
the opportunity of examining the “Terra Nova“ specimens in the 
British Museum I can positively assert that the “identification“ 
of them by Bell as Astropyga radiata is wrong. The merest glance 
at the specimens shows that they are Echinothurids, and on a 
doser examination they are easily seen to be identical with the 
Australian Aræosoma thetidis (H. L. Clark). 
To the description of this species, given in the works quoted, I 
may add that in the New Zealand specimens I have found the 
“dactylous“ (globiferous) pedicellariæ, which Clark did not find 
in the Australian specimens. They are three-valved and hardly dis- 
tinguishable from those of A. Owstoni Mrtsn. 
5. Notechinus novae-zealandiæ n. sp. 
PI. VI. Figs. 7—10 ; PI VIII. Figs. 4-5, 7-11. 
Echinus angulosus Farquhar. 1898. Echinoderm Fauna of New Zea¬ 
land. Proc. Linn. Soc. N. S. Wales. p. 319. 
— — Ben ham. 1909. Scient. Res. N. Z. G. Trawling 
Exped. 1907. Echinoderma. Rec. Canterbury Mus. I. 
p. 25. PI. XI, Fig. 5. 
In my Report on the Echinoidea of the Swedish South Polar- 
Expedition 1 ) I called attention (p. 40, Note 2) to the faet that the 
l ) Wissensch. Ergebn. d. Schwed. Siidpolar Exp. 1901—3. Bd. VI. 1910. 
