244 MR. H. L. CLARK ON SOME 
are more numerous than the small ones, and then says the papulae are 
surrounded by the small ones, which certainly implies a considerable number 
o£ the latter. In the present specimen, near the base o£ the arm there are 
about five small plates to each one of the large ones. At the tips o£ the 
rays, however, the large plates become more numerous. All plates, both on 
the dorsal and oral surfaces of the sea-star, are closely covered-with cylin- 
drical spinelets like those occurring in Asteiina. Dorsally the sjjinelets end 
in 2-4, usually 3, glassy points of which one is larger than the other ; ven- 
trallj' there are more glassy jjoints on each spinelet, and they are subequal. 
Even on the ventral plates, I cannot see that these crowded spinelets resemble 
a "granulation " as Perrier says. Gray says the colour of his dry specimen 
was pale yellow, and the one before me might be called dirtj^ yellow. 
Perrier says that some of those in the British Museum were " encore varies 
de jaune et de blanc," but immediately states that the spines on the large 
ossicles were " bleus " ; probably either " blanc " or " bleus •" is a typo- 
g'raphical error. 
COSCINASTERIAS CALAMARIA. 
Asteiias calamaria Gray, 1840, Ann. Mag. Nat. Hist. vi. p. 179. 
Coscinasterias calamaria Pemer, 1894, 'Travailleur ' et ' Talisman' Stell. p. 106. 
A sea-star dredged near Fremantle is the only representative in the col- 
lection of this characteristic species of southern Australia. It is a small 
specimen in poor condition, only three arms remaining attached to the disk, 
which is but 10 mm. across. The rays are about 55 mm. long, and there 
evidently were eleven of them originally. 
UnIOPHOBA DYSCRITA *, Sp. nOV. 
Diagnosis : Disk moderate, little elevated ; arms short, wide, and little 
arched. Inferomarginal, actinal, and adambulacral spines flattened, chisel- 
like at tip. No intermarginal plates. No shagreen-like areas on supero- 
marginal plates. Abactinal spinelets of two kinds, blunt cylindrical and 
■capitate conical. 
Description of liolot>/pe : Rays 5. R = 55 mm. ; r = 13 mm. ; R = 4r+. 
Br = 15 mm. Br at middle of ray, 13 mm.; at 5 mm. from tip, 7 mm. 
Disk moderate, little elevated; arms wide and little arched. The specimen 
is dry and flattened, and it is hard to tell how much elevated and arched the 
upper surface may have been in life. Abactinal skeleton of rather heavy 
plates forming an irregular and very open network, the meshes of which are 
four distinct series only at the base of the arm ; at the middle of the arm 
the lateral series are still evident, but the median series are quite replaced 
by irregularly-arranged meshes 3-5 mm. across, more or less occupied, at 
least at centre, by papulas. Basally there are 4-12 papulae in the mesh-areas. 
* 8uo-KpiTos = hard to determine, in reference to the difficulty of distinguishing the species 
■of TJniophora. 
