FIJI-NEW ZEALAND EXPEDITION 79 
Agassiz’ definition of that genus. In the first place there are but 
two genital openings to each arm, instead of four, although the 
two present are very near the mouth shields and on the side of 
the arm-base instead of in the interbrachial region. The arm- 
spines are but three in number, instead of seven to thirteen; the 
spines are not noticeably flattened and stand out from the side 
arm-plates resembling relatively small spines of the Ophiocoma 
type. The disk is covered with minute, scale-like plates and the 
radial shields are so small as to be scarcely evident. This interest- 
ing form does not fit into any genus described by Agassiz. Other 
closely allied specimens may belong to the same genus. 
Another specimen, which I have been unable to identify gener- 
ically, has a jet black disk and white arms with almost white 
spines, sharply speckled with black, cylindrical in form, and 
abruptly truncated at their distal ends. It looks like an Ophio- 
coma and has evident mouth papille. The disk has a leathery, 
granulated integument typical of that genus. One specimen men- 
tioned in my notebook had a spread of about two feet, the great- 
est I have found among the true serpent-stars. It was grayish in 
color, with very prominent radial shields and may have been an 
Ophiothriz. 
The Asteroidea were poorly represented on Makuluva. By far 
the most common was a large, intensely blue species, one of the 
most conspicuous objects on the flats. Dr. Stoner found one in a 
New Zealand museum labeled ‘‘Linckia levigata.’’ It is a large, 
pentamerous species, usually with a spread of a foot or more, and 
sometimes individuals are found with more than five rays. The 
disk is quite small compared with the length of the arms. The 
color, an intense bright blue, disappears rapidly when specimens 
are dried but much less rapidly in aleohol. It has a tough, leathery 
consistence and rarely if ever shows the tendency to shed its rays, 
so remarkably manifest in West Indian species of this genus. The 
surface is quite smooth, although close inspection shows that it is 
finely granulated. Papule are numerous on the dorsal and lateral 
surfaces, but not on the ventral surface below the marginal plates. 
The latter are arranged in two regular rows which are evident but 
not conspicuous. There is a single row of short stumpy spines on 
either side of the tightly closed ambulacral furrow whose surfaces 
are granular like that of the general surface of the starfish, and 
they seem to be covered with a rather thick integument. The 
tube-feet are provided with suckers and are arranged in two 
