134 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



Seven of the specimens have 10 arms only, two have 11, and one has 

 12; arms 55 mm. long, with 85 brachials, the first 5 quadrate, then 

 triangular about as long as wide, becoming quadrate and elongate 

 distal]}^; the long sides of the joints are convex, and bear the pinnules 

 in the distal angles. 



First pinnule small, slender, and delicate, the first two joints greatly 

 enlarged, the others small and squarish; second pinnule much longer 

 with elongated joints, the pinnules from then on remaining very 

 uniform to the end of the arm, the second and third being onh^ ver}' 

 slightly" or not at all longer than the succeeding. 



Color in life bright yellow, banded with purple; lower brachials 

 purple; cirri deep purple, or purple banded with white. 



Type.—C^i. No. 22622, U.S.N.M.; ivom Allatross station. No. 4893; 

 32° 32' 00" north latitude, 128° 32' 50" east longitude (Eastern Sea) ; 

 106 fathoms; August 9, 1906. 



5. ANTEDON FLAVOPURPUREA, new species. 



Centro-dorsal low-hemispherical, the pole somewhat flattened, bear- 

 ing about 20 marginal cirri in two irregular rows; the cirri are 15 mm. 

 long and have 30 rather stout joints, the first 10 slightl}^ longer than 

 wide, the others short; all the joints are slightly compressed and have 

 expanded and overlapping distal edges, and the distal two-thirds are 

 provided with a dorsal spine, which becomes more prominent toward 

 the tip; penultimate joint and terminal claw rather small. 



First i-adials just visible, not produced anteriorly; second radials 

 oblong, terminating laterally in a tubercle, and furnished with a strong 

 median keel; axillary triangular, about twice as wide as high, with a 

 median tubercle just forward of the center, continued backward in a 

 keel, corresponding with the keel on the second radial; surface of 

 second radial and axillar}^ rough, and furnished with a few small blunt 

 tubercles. Two articulated distichals, the first irregular!}^ oblong, 

 slightl}' raised in the center, furnished exteriorly with a broad lateral 

 flange, the axillary triangular, a low tubercle on its lower margin. 

 Usual]}' 20 arms of aV)Out 120 joints, the first 5 irregularly oblong, 

 then triangular to about the middle of the arm, about as high as wide, 

 then becoming quadrate; all the brachials have overlapping edges, the 

 lower ones furnished with a row of tine sharp teeth. A syzygy in the 

 third brachial, another about the fourteenth, and others at intervals 

 of about 4 joints. 



The first pinnule is small, slender, and delicate, 4 nun. long, with 15 

 joints, the first 2 disproportionately large, the others longer than 

 wide; second i)innule 6 mm. long, with 15 joints, the first 2 enlarged, 

 the rest elongate; the third pinnule is 7 mm. long and resembles the 

 second. The following pinnules decrease gradually in length to the 

 seventh or eighth, which are 4.5 mm. long, with about 10 joints, then 



