AXTFDOX SPICATA. I O 1 



(syzygy) nearly square. Tlie next four are oblong , and 

 the following ones wedgeshaped , of medium length , and 

 very slightly overlapping; the later ones are blunter and 

 more oblong, becomiog squarer and slightly elongated at 

 the arm-ends. 



The muscle-plates of successive joints stand up rather pro- 

 minently, alternately on either side of the ambulacral groove. 



First syzygium on 3rd brachial; the next between 15 

 and 18; then an interval of 3 — 10 joints, usually 5 — 7, 

 between successive syzygia. 



The second brachial bears a moderately long but slen- 

 der pinnule, and the next joint a shorter one; the next 

 pair on 4th and 5th joints are longer than the first pinn- 

 ule , stiff, tapering, and styliform , consisting of about 

 15 elongated joints. That on the 4t]i joint is the longer , 

 reaching 15 mm. 



The next pinnule is stiff' but shorter again , and the 

 following ones decrease till about the tenth brachial , aft- 

 er which the size increases slowly. Towards the arm-ends 

 the pinnules become slender and filiform , but they never 

 reach the length of the second pair. 



Disc naked and much incised; 17 mm. in diameter. 



Spread , 20 ceutim. 



Colour, the skeleton light purplish red with darker bands 

 at the junctions; the perisome very much darker, almost 

 black. Sacculi closely set along the pinnule ambulacra. 



Locality. The Banda Sea. Coll Dr. Semmelink. 



Remarks. This type differs from Ant. articulata , the Mo- 

 luccan species described by Muller, in having fewer cirrhus 

 joints and no spines on the later ones. The syzygial in- 

 terval on the arms is nmch shorter , and the fourth pin- 

 nule is relatively smaller. 



Antedon seems to be comparatively rare in the Moluc- 

 cas. I know of more than a dozen Actinometr a -speties 

 from these islands, but of only six Antedons which with 

 one ten-armed exception {Ant. Jacquinoti Mull, sp.) all 

 agree in the characters of the ray-divisions. Three of 



jS'otes from tlie Leyden üMuseum "Vol. HI. 



