158 
smaller than the type, but agreeing perfectly with it. The ten 
arms are 110 mm. long, and the cirri are XV, 31—34, 20 mm. to 
25 mm. long. 
The colour is a beautiful deep violet, more or less blotched 
dorsally with piukish flesh colour. 
This species differs from the closely related A. discoidea from 
Port Denison, Australia, in having the lower pinnules with shorter 
joints, the basal usually slightly carinate, the distal with slightly 
thickened distal edges, vaguely suggesting an approach to the con- 
ditions found in AA. variipinna; the synarthrial tubercles in this 
form arise more abruptly than in A. discoidea, and are somewhat 
higher and more prominent. 
Åmphimetra ensifer (Å. H. Clark). 
rr ensifer 1908. A. H. Clark, Proc. Biol. Soc. Washington, 
Vo 
Amphimetra tel fbrstie (sic) 1909. A. H. Clark, idem., Vol. 22, p. 7. 
Singapore. June 15, 1905. Four specimens; one has 
the arms 90 mm. long, the cirri XVII, 30—33, 20 mm. to 23 mm. 
long, and is white in colour, the perisome brownish purple, the 
cirri becoming light purplish distally; another is similar, but yellow 
brown; the third has the ten arms 80 mm. long, the cirri XIV, 
30—33, 23 mm. to 27 mm. long, and is brownish white; the fourth 
is smaller, light bluish gray. 
April 20, 1906. The type. 
The smooth proximal pinnules, which have squarish joints, 
combined with the slender and tapering cirri, which have com- 
paratively long jvints,. the plated. disk, the elongated synarthrial 
tubercles, and the small size, make this species an easy one to 
recognize. 
Åmphimetra schlegelii (A. H. Clark). 
Alecto schlegelii Litken, M. S. 
ie mr rgangnn chlegelii 1908. A. H. Clark, Proc. Biol. Soc. Washington, 
Rank noklegeisk 1909. A.H. Clark, idem., Vol. 22, p. 7. 
Japan”. Two specimens. 
