FIJI-NEW ZEALAND EXPEDITION 75 
something of the general nature of the gastropod fauna. Those 
already mentioned are for the most part omitted. I find notice of 
Cerithium, Leucozonia, Spondylus, Natica, Bulla, Oliva, Livia, 
Patella, Haliotis, and Mitra. Many other genera are included in 
the collection but I do not venture even approximate identification 
of the smaller things. 
I have already spoken of the beauty of the nudibranchs found 
on Makuluva flats. It would be impossible to imagine more vivid 
colors than are exhibited by some of them. One particularly bril- 
liant individual gave us an interesting exhibition of swimming in 
a definite direction by rhythmical undulations of the delicate 
lateral edges of the mantle. I had read somewhere that the nudi- 
branchs do not swim in any true sense, but positive proof was 
before our eyes. This specimen was about ten inches long when 
alive but has shrunk to four inches in the preservative, and, of 
course, its colors have disappeared. 
Many chitons were secured and I find a note of one that was 
soft and lacked the characteristic plates. A quantity of common 
forms was collected for future class use. 
The cephalopods were by no means so numerous as we found 
them in the West Indies. A minute Octopus was found on the 
abdomen of a fish. The quantity of ink discharged by a small 
devil-fish was truly surprising and the agility with which they 
squirm away from behind their ‘‘smoke sereen’’ won our admira- 
tion. 
ECHINODERMATA 
All in all the echinoderms of Makuluva were disappointing. Al- 
though numerous enough individually, they were chiefly of well 
known Atlantic genera and but few surprises were in store for us 
there. Such forms as Heterocentrotus and Colobocentrotus, ecom- 
mon in the Hawaiian group, were not found, but the ubiquitous 
Echinometra among the echinoids, and Ophiocoma among the ser- 
pent stars predominated almost everywhere on the flats. 
The holothurians, from their size and number of conspicuous 
forms, were most likely to attract attention. Great, thick-walled 
species, such as produce the trepang of the orient, lie fully ex- 
posed in the depressions of the flats. One of the commonest is jet 
black in color while its dorsal surface is devoid of tubercles, quite 
smooth and shiny. Our experience in eating it has already been 
