50 ‘* ENDEAVOUR” SCIENTIFIC RESULTS. 
The proportion of R to r shows little diversity, ranging only 
from 2.3 to 2.5. The largest specimen has R=155 mm.; 
r=60 mm.; br at middle of ray, 30 mm. In colour, these 
specimens are either tawny brown or deep brick red ; one of 
the red ones has the central abactinal area light yellowish- 
gray in sharp contrast. Sixteen specimens. 
Locs.—Highteen miles south-west by south of Lady Ellott 
Island, Queensland, 18 fathoms. 
Twenty-five miles south-east of Double Island Point, 
Queensland, 33 fathoms. 
OREASTER GRACILIS, Liitken,. 
Oreaster gracilis, Liitken, Vid. Med., 1871, pp. 260, 264. 
The fact that this specimen comes from the same station as 
all but one of the specimens of O. australis makes me hesitate 
to designate it by a different name, yet it is obviously different. 
R=155 mm.; r=48 mm.; br at middle of rry=22 mm. R= 
3r. Notonly are the rays thus much longer and more slender 
proportionally than in O. australis, but the meshes of the 
abactinal skeleton are noticeably finer, and hence the papular 
areas are much smaller. The colour is light yellowish-gray. 
I think there is no doubt that the specimen is O. gracilis but I 
believe it may ultimately be shown that O. gracilis is only a 
form of O. australis, the peculiarities of which are emphasised 
in drying. 
Loc.—Kighteen miles south-west by south of Lady Elliott 
Island, Queensland, 18 fathoms. 
Genus ASTERODISCUS, Gray. 
ASTERODISCUS TRUNCATUS, Coleman. 
Asterodiscus truncatus, Coleman, Mem. Austr. Mus., iv., 14, 
1911, p. 699. 
This is a fine series of this notable species, but there is 
nothing to add to Coleman’s careful description, save that the 
species grows to a size much larger than his types. His 
holotype has R=103 mm., while his figured specimen has 
R=138 mm. The smallest of the ‘“‘ Endeavour ” specimens 
has R=83, while the large specimens have R=150-165 mm. 
