4 ‘* PNDEAVOUR ” SCIENTIFIC RESULTS. 
indicates that such a division of the Australian marine fauna. 
fails to bring out the interesting contrasts between the east 
and west coasts, and I would suggest the recognition of three 
Australian subregions as follows :— 
1. East Australian subregion, extending from about 35°S. 
Lat. to 15°, merging northward in the East Indian or, 
more properly, Indo-Pacific fauna of the Torres Strait 
district. Of the more than four hundred Australian 
Echinoderms now known, about sixty-five, or some 
16% belong exclusively to this fauna. Some of the 
characteristic species are the following :— 
CRINOIDS. 
Comatula cratera. 
Ptilometra miilleri. 
Compsometra lovent. 
ASTEROIDS. 
Mediaster monacanthus. 
Anthenea acuta. 
Astrogonium diibent. 
OPHIURANS. 
Conocladus amblyconus. 
Ophiarachnella ramsayt. 
Ophiura multispina. 
ECHINI. 
Prionocidaris australis. 
Centrostephanus rodgersit. 
Clypeaster australasie. 
HOLOTHURIANS. 
Teniogyrus australanus. 
Molpadia dissimilis. 
Cucumaria mirabilis. 
Some of the species characteristic of this fauna no doubt 
range south of Lat. 35° and even reach Port Phillip, Victoria, 
but such cases are exceptional and do not invalidate the 
recognition of the subregion. The remainder of the more than 
two hundred Echinoderms known from the eastern coast of 
Australia, north of Shoalhaven Bight, New South Wales, 
are Indo-Pacific forms, many of which find a centre of 
abundance in Torres Strait. The distance southward to 
which they range differs greatly in different species, but it 
is evident from the “Endeavour” collection that most of 
