'182 ANTEDON ^^KRmPINNA. 



1. Anledon gerripinttfi, , ii. sj». 



Description of an individual. 



("eutrodor.sal tliscoidal , bearing about 12 marginal cirrbi. 

 These have about 18 thick joints none of which are longer 

 than broad , the penultimate one bearing a blunt spine. 



The first radials are scarcely visible even at the angles 

 of the calyx; the second nearly oblong and not united la- 

 terally ; the axillaries less than twice their length , almost 

 tiiaugular , with Avide distal angles and slight backward 

 projections from the middle of their bases. 



Ten arms. First brachials almost rhomboidal , and closely 

 united laterally ; the second distinctly shorter and more 

 wedgeshaped. Third brachial a syzygy, transversely oblong 

 or nearly square. The next few joints short and oblong , 

 and the following ones longer and sharply wedgeshaped , 

 gradually becoming blunter towards the arm-ends. 



The first syzygium is on the third brachial, and the 

 next usually between 11 and 15; after which the syzy- 

 gial interval is usually 3 or 4 joints. 



The stoutest pinnules are those borne by the fourth and 

 fifth brachials. They consist of about 15 joints, all but 

 the uppermost of which are short, broad, and thick with 

 their distal edges projecting beyond the base of the next 

 joint, so as to give the pinnule a serrated outline. The 

 pinnules on the second and fourth joints are slightly 

 longer than those on the third and fifth joints respectively. 

 Those immediately following are shorter and composed of 

 a few elongated joints , after which the length gradually 

 increases, though never much exceeding that of the large 

 lower pinnules. 



Disc , naked and somewhat incised ; barely 5 mm. in 

 diameter. Spread about 6 centim. 



Colour, white with deep purple bando on the arms, es- 

 l)ecially at the syzygies. Sacculi closely set along the pin- 

 nule ambulacra , and rather farther apart on the arms. 

 Locality. Andai, New Guinea. 



JVotes from the Leyden ]Museuin, "Vol. III. 



