76 ‘*‘ ENDEAVOUR” SCIENTIFIC RESULTS. 
near the tip, extending inwards horizontally directly across 
the ambulacral furrow, but not quite as long as the width of 
the furrow, and a stout, flattened spine, 2-3 mm. long, with 
widened chisel-like tip, situated on the margin or actinal 
surface of the plate ; this spine is more or less clothed on its 
outer side with a membrane densely covered with minute 
pedicellariz. Beyond the middle of the arm the acicular 
furrow spine disappears, and the big marginal spine becomes 
smaller and smaller and steadily more acicular until at tip 
of arm, it is very minute or perhaps wanting. Oral plates 
each with 3 short (scarcely a millimeter long), blunt spines, 
one on the inner corner, one (the largest) on the outer 
corner, and the smallest at the aboral, radial corner ; 
all carry a few minute pedicellarie. | Madreporites ap- 
parently 4, very small and with few, short, wide furrows ; 
they are more or less elevated and near margin of disk, but are 
difficult to make out in an undried specimen. Colour (alco- 
holic or dry), dingy yellowish-white. Two specimens. 
This is a notable species, one of the “* Endeavour’s” most 
interesting captures, since it is the first member of the genus. 
to be taken in the Southern Hemisphere and except the recent- 
ly discovered Hawaiian species, the only species not from the 
Atlantic. The genus must henceforth be recognised as cos- 
mopolitan, for the present form can hardly be considered 
generically different from the others although its specific 
characters are well-marked. The occurrence of several 
madreporites is an unusual feature and the adambulacral 
furrow spine is also characteristic. Finally it is worthy of 
remark that no other species of Odinia has been taken in 
water as shallow as 200 fathoms. 
Loc.—South-east of Cape Everard, Victoria, 200 fathoms. 
OPHIUROIDEA. 
The Ophiurans collected by the ‘‘ Endeavour ”’ are not an 
extraordinary lot in any particular, but they give added 
weight to the view that the Australian Ophiuran fauna is 
relatively poor. Up to the present about one hundred and 
fifteen species of Ophiurans have been recorded from Aus- 
tralia in three hundred fathoms or less, but fully half of these 
are known only from the far northern and north-western 
coasts of the continent, and are East Indian rather than 
Australian. Whitelegge lists only thirty-four Ophiurans from 
Port Jackson and neighbourhood, and six of these are from 
