3 
6 ‘* ENDEAVOUR” SCIENTIFIC RESULTS. 
HoOLOTHURIANS. 
Leptosynapta dolabrifera. 
Pentacta spinosa. 
The western limit of this subregion is not easy to determine. 
The little work the ‘‘ Endeavour ”’ did in the Great Australian 
Bight revealed a very interesting fauna and suggests that 
many of the Echinoderms of the South Australian subregion 
do not extend their range west of 125°K. Long. At any rate, 
there is no doubt that once Cape Naturaliste is passed, the 
Echinoderm fauna undergoes an appreciable change, although 
a few species from the south (as Ptilometra macronema) range 
northward to Geraldton, Western Australia. 
3. West Australian subregion, extending northward 
from Lat. 35°S.; the northern limit cannot be given 
as we know almost nothing of the echinoderm fauna 
between Lat. 20° on the north-west coast to Port 
Darwin, a distance of more than a thousand miles. 
Some eighty-five species of Echinoderms are now known 
from West Australia; of these ten or a dozen are 
species of the South Australian subregion and rather 
more than thirty are species from the north, relatively 
few of which are, however, truly East Indian. More 
than forty species, or half the fauna, are peculiar to the 
subregion, so far as we know, and many of these are 
very remarkable forms, often representing peculiar 
genera. The following are some of the characteristic 
species :— 
CRINOIDS. 
Comatula etheridget. 
Petasometra helianthoides. 
Neometra gorgonia. 
ASTEROIDS. 
Nectria ocellifera. 
Oreaster nodulosus. 
Culcitaster anamesus. 
Linckia tyloplax. 
OPHIURANS. 
Conocladus microconus. 
Astrogymnotes catasticta. 
Ophiocreas adherens. 
Ophiothrix smaragdina. 
