lig 



serrate; after the first three the dorsal profile of the individual segments becomes straighter, 

 making a considerable angle with the longitudinal axis of the cirrus, and the distal edge 

 becomes straight, forming a very finely spinous transverse ridge which, however, is not raised 

 above the general dorsal surface of the segments; this transverse ridge becomes gradually more 

 and more marked, at the same time moving more and more toward the centre of the dorsal 

 surface ; at the ninth segment it becomes median and begins to become slightly concave in 

 profile, and after the fourteenth it resolves itself into two prominent entirely distinct tubercles 

 situated side by side, the distance between the apices of these tubercles being about equal to 

 the distance from either apex to the lateral border of the segment; distally these tubercles 

 gradually move toward each other, at the same time moving nearer and nearer the proximal 

 margin of the segments; on the fourth before the penultimate the tubercles merge into a single 

 transversely elongate tubercle which becomes less and less elongate and on the antepenultimate 

 becomes a single small tubercle situated near the proximal margin of the segment. As a whole 

 the cirri are moderately stout; in lateral view, though the dorsal profile is serrate, no distinct 

 dorsal processes are seen except in the distal half when the tubercles appear as minute dorsal 

 processes. 



The arms are 10 in number, 75 mm long, and resemble those of the other large 

 species of the genus. 



P t is 5 mm. long, small and weak, with 14 segments, tapering with moderate rapidity 

 in the proximal half and becoming very slender in the distal half; the first segment is short, 

 the following gradually increasing in length and becoming about as long as broad on the fourth 

 and fifth and distally about twice as long as broad ; the pinnule is slightly prismatic. P 2 is 

 9 mm. long with 17 segments, not greatly larger than Pj basally but tapering evenly from 

 the base to the tip; the first two segments are slightly broader than those following, much 

 broader than long, the third slightly broader than long, the fourth slightly longer than broad, 

 and the following about half again as long as broad, becoming twice as long as broad toward 

 the end of the pinnule; the pinnule is rounded prismatic; the fourth and following segments 

 have slightly produced and spinous distal edges, this feature gradually increasing in extent 

 distally and being most marked at the prismatic angles. P 3 is 6 mm. long with 14 segments, 

 similar to P 2 but very slightly smaller; P 4 is 5 mm. long with 13 segments, similar to P 3 but 

 slightly smaller. P. is 4.5 mm. long with 14 segments, resembling P 4 but with proportionately 

 shorter segments. P 6 is 4 mm. long with 15 segments, resembling P. but with proportionately 

 shorter segments; the following pinnules are similar to P c . The distal pinnules are very slender, 

 7 mm. long with 21 segments of which the longest are about twice as long as broad. 



The colour is light yellowish, banded with purple at the brachial articulations. 



Another specimen has the arms 75 mm. long and the cirri XIV, 23 — 25, 11 mm. long; 

 as in the preceding the first cirrus segment is strongly compressed laterally through crowding 

 by its fellows; P l is 6 mm. long with 15 segments; P 2 is 9 mm. long with 17 segments; P s is 

 6.5 mm. long with 14 segments; P 4 is 5 mm. long with 12 segments; P. is 4.5 mm. long 

 with 1 3 segments. 



The remaining two specimens are similar. 



