1 27 



long with 1 7 segments which at first are short, becoming about as long as broad on the ninth 

 or tenth. The distal pinnules are very slender, about 4.5 mm. long with 17 segments. 



The colour is violet as far as about the sixth brachial, thence yellow with a narrow 

 median line of white; the outer half or two thirds of the proximal pinnules is yellow. 



An individual similar to the preceding, with arms 50 mm. and cirri 1 1 mm: long, is olive 

 brown, gradually becoming yellow bfown after the second syzygy, there is a narrow median 

 line of white on the arm bases as far as the second syzygy. 



Another is entirely deep violet with the ends of the cirri and pinnules yellowish. 



A fourth example is deep purple with narrow yellow bands on the arms and a more 

 or less obsolete narrow mediodorsal line of yellow on the arm bases. 



A fifth is purple with large white blotches on the arms and a fine white mediodorsal line. 



Still another is entirely orange yellow. 



The remaining two resemble one or other of the preceding. 



The specimen from Stat. 305 I at first believed was a new species, and I therefore 

 described it under the name of marginata ; further study has convinced me that it is merely 

 a young specimen of adconae. 



lts characters are as follows : 



The dorsal pole of the centrodorsal is papillose. 



The cirri are XV, 15 — 16, 7 mm. long; the first segment is short, the following gradually 

 increasing in length to the fourth, fifth or sixth which, with the following is about as lons: as 

 broad. The cirri are moderately stout; the third and following segments have a strong trans- 

 verse ridge near the proximal dorsal margin ; this ridge is prominent and high, with a finely 

 serrate crest; it lies about one third of the distance between the proximal and distal margins 

 of the segments; in the proximal half or three quarters of the cirri the distal dorsal edge of 

 the segments is more or less everted so that there is the same bidentate appearance as in 

 typical examples of adeonae\ on the earlier segments this eversion may be nearly as high as 

 the transverse ridge, but it soon decreases in height and disappears in the outer half or quarter 

 of the cirri; the segments of the smaller cirri are quite without it. 



The proximal arm structure resembles that in typical examples of adeonae; the ossicles 

 of the IBr series and the first two brachials are broad, and are in lateral contact through 

 produced and flange-like ventrolateral borders the outer edges of which are parallel to the 

 longitudinal axis of the segments which bear them. The arms are 30 mm. long. 



P T is 5.0 mm. long- vvith 9 segments of which the first is about one third broader than 

 long, the second slightly trapezoidal, half again as long as the proximal diameter, the third 

 about three times as long as the proximal diameter,' the fourth-sixth slightly longer, and the 

 following rapidly diminishing in length to the small terminal segments; the pinnule is rather 

 slender, but much stiffened; the second-fourth segments are slightly constricted centrally. P 2 is 

 4 mm. long with 9 segments, similar to P 1 but very slightly stouter and with the component 

 segments slightly shorter. P., is 2.5 mm. to 3.0 mm. long with 8 segments, more slender and 

 less stiffened than the preceding. P 4 is 2 mm. long, small, slender and weak, with 8 or 9 

 segments; the next two pinnules are similar, and the following gradually become elongated, 



