415 
distinctly tapering. Very numerous larger tubercles (and spines) 
in all the dorsal interambulacra, and also a few larger tubercles 
in the ambulacra outside the petals. Hind end of test vertical. 
Periproct transverse oval. Subanal plastron small, 20 mm wide, 
oval, mainly on the ventral side. 2 
pairs of tubefeet enclosed by the fasciole. 
Plastron very narrow, the tubercles 
continuing without interruption on to 
the labrum, which is large and promi¬ 
nent. Pedicellariæ very scarce; only 
the two usual kinds of tridentate pedi¬ 
cellariæ have been found, viz. the 
siender and the short-valved, coarse 
form (Fig. 69. a, b). Colour purplish- 
violet. 
This very distinet species appears 
to be the nearest related to the North 
Atlantic Spatangus Raschi Lovén, with 
which it agrees in the feature of larger 
tubercles oceurring in the ambulacra, 
outside the petals. — As no species 
of the genus Spatangus is known to 
oceur nearer than the Hawaiian Islands 
and the South African Seas, the finding ot a species in iNew Zea¬ 
land Seas is rather unexpected. 
The type specimen in the Dominion Museum, Wellington. 
Pevseph.ona.stev neozelanicus n. sp. 
Type-specimen measuring ca. 110 mm R, ca. 33 mm r, thus 
R = ca. 3.3 r. Arms ca. 35 mm broad at base, regularly tapering. 
In the second specimen the measurements are R ca. 103 mm, 
r ca. 27 mm, thus R = ca. 3.8 r. Arms ca. 29 mm broad at base. 
The second specimen thus has a rather smaller disk and more 
siender arms. 
Paxillar area very broad; the paxillæ arranged in rather distinet 
transverse series, except along the midline, where no regular 
arrangement is seen; the size of the paxillæ very uniform, only 
slightly larger on the disk. The spinelets are siender, of equal length. 
Fig. 69. Valves of tridentate pedi¬ 
cellariæ of Spatangus multispinus ; 
a. siender; b. short-valved form. 
a. b. 62 /i. 
