Tae ‘* ENDEAVOUR” SCIENTIFIC RESULTS. 
I have been much puzzled by this Sea-urchin. It does 
not look like any of the many specimens of P. magellanicus 
which I have examined, but I am sure it is very nearly related 
to that species. Indeed it is difficult to point out any im- 
portant distinguishing features. Perhaps the two most 
tangible differences are the narrow poriferous areas, with 
vertical arcs of pores, in P. notius and the noticeable scarcity 
of miliary tubercles; in P. magellanicus miliary tubercles 
are abundant and the poriferous areas are moderately wide 
with the arcs of pores more or less oblique. The anal system 
of P. notius looks quite different from that of P. magellanicus, 
as it is nearly circular and is covered by much more numerous 
plates. The presence of only one lateral tooth on the globi- 
ferous pedicellariz, instead of one on each side as in P. 
magellanicus, and the white primary spines of P. notius are also 
worthy of mention, though perhaps not reliable specific 
characters. It may also be mentioned, though I do not 
lay any weight on the fact, that in P. magellanicus the buccal 
plates bear numerous tridentate pedicellariz, while in P. 
notius these plates are covered with ophicephalous. The 
fact that all oculars are exsert in P. notius is interesting and 
may ultimately prove to be a good specific character. The 
general appearance of abactinal system, spines, pedicellariz 
and buccal membrane is very much that of an Amblypneustes, 
but the test is very different, as are the buccal plates. It is 
a pity the “ Endeavour” did not secure an abundance of 
specimens of Parechinus, for the Australasian species of the 
genus sorely need elucidation and this single specimen only 
adds to the difficulties ! 
Loc.—South of Gabo Island to south-east of Cape Everard, 
Victoria, 70-80 fathoms. 
Genus GYMNECHINUS, Mortensen. 
GYMNECHINUS EPISTICHUS, H. L. Clark. 
Gymnechinus epistichus, H. L. Clark, Mem. Mus. Comp. 
Zool. Harvard, xxxiv., 1912, p. 289. 
This specimen resembles the holotype closely, but differs 
in two points ; genital 3 (as not infrequently happens in this 
genus) is completely shut out from the periproct, and the 
primary spines, especially the actinal ones, are a decidedly 
more distinct red. The horizontal diameter of the test is 
22 mm. 
Loc.—Twenty-five miles south-east of Double Island Point, 
Queensland. 
