66 ‘* ENDEAVOUR” SCIENTIFIC RESULTS. 
Genus PLECTASTER, Sladen. 
PLECTASTER DECANUS (Miiller and Troschel). 
(Plate xxvi., fig. 1-2.) 
Echinaster decanus, Miller and Troschel, Arch. f. Naturg., 
ix.i., 1843, p. 114. 
Plectaster decanus, Sladen, Chall. Rep., Zool., xxx., 1889, 
p- 535. 
This remarkable species never having been figured, it seems 
desirable to figure it here, and the Port Jackson specimen is 
shown on Pl. xxvi., fig. 1-2. Init, R=115mm., andr=27 mm. ; 
R=4 r. The specimens from Shoalhaven Bight, New South 
Wales, are smaller and not so well preserved, but they appear 
to have been placed in formalin and then dried, and hence 
are more nearly the natural colour. In them the papula areas 
are bright reddish-purple, while the skeleton and spinelets 
are light yellowish in sharp contrast ; on the actinal surface, 
there is a considerable suffusion of reddish-purple, especially 
interradially, near the mouth. The Port Jackson specimen 
is yellowish-brown, the papular areas darker than the skeleton. 
Three specimens. 
Locs.—Shoalhaven Bight, New South Wales, 15-45 fathoms. 
Off George Head, Port Jackson, New South Wales. 
Family SOLASTERIDA. 
Genus CrossasterR, Miiller and Troschel. 
CROSSASTER MULTISPINUS,! sp. nov. 
(Plate xviii., fig. 5-6.) 
Rays 11. R=40 mm);> 7=20 mm); 7R—27: br 
mm.; R=4 Br. Abactinal skeleton an open mesh-work of 
narrow, rather delicate ossicles, leaving large papular areas, 
in which, however, the papule are few, large, isolated. 
Pseudopaxille rather crowded on disk, but more widely 
spaced on arms; each bears a tuft of 8-15 long, slender, 
acicular spines, exceeding the stalk in length. Supero- 
marginals insignificant. Inferomarginals few, widely spaced, 
conspicuous, about 16 on each side of an arm; they are 
greatly compressed at summit into a narrow vertical ridge, 
carry 25 (more or fewer) sharp, spinelets, most of which are 
shorter than those on the abactinal pseudopaxille. Actinal 
1. Multispinus=with many spines ; in reference to the armature of the 
adambulacral and oral plates. 
