120 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



segments which become about as long as broad on the third and distally three tunes 

 as long as broad. P 2 is enlarged and greatly stiffened. P 3 is slightly larger than 

 P 2 , but is similar to it. The following pinnules as far as P 6 or P 8 are similar but slowly 

 decrease in length and stoutness. The pinnules succeeding are only slightly stiffened. 

 The distal pinnules are very long and slender, with about 27 segments. P, is rather 

 strongly prismatic, and the following pinnules are prismatic for a diminishing distance 

 basally. 



Notes. The specimen from Lord Howe Island is without cirri. The very stiff 

 lower pinnules reach a length of 23 mm. (P 2 ). The arms were probably about 120 

 mm. long. There were XVIII cirri, arranged in one and a partial second irregular 

 marginal row. The dorsal pole of the centrodorsal is deeply concave. The synar- 

 thrial tubercles are but slightly marked. In the proximal portion of the arms there 

 is a faint low rounded median carination. P b which is not stiffened like the pinnules 

 succeeding, is only half as long as P 2 . 



Prof. Torsten Gislen gave notes on three specimens from Fiji. In one the centro- 

 dorsal is discoidal, 5 mm. in diameter, with the bare dorsal pole 3 mm. across with its 

 margin somewhat raised. The cirri are XX, 55-58, from 30 to 35 mm. long. The 

 first twenty segments are from two to three times as broad as long, slightly constricted 

 centrally, with the distal dorsal edge progressively more and more serrate, developing 

 into a transverse spiny crest. This crest, which in the beginning has several points, 

 from about the twentieth segment onward gets two dorsal spines. On the twentieth- 

 twenty-fifth segments these two spines are close together, later becoming widely sepa- 

 rated, standing at the dorsolateral margins of the segments; they do not approach 

 and fuse into a single dorsal spine until some few segments before the penultimate. 

 The 10 arms are mostly broken; loose arms have a length up to 170 mm. The arm 

 bases are without ventrolateral flanges. Small and indistinct synarthrial tubercle? 

 are present. The distal ends of the brachials are a little everted and finely spinous. 

 The distal intersyzygial interval is usually from 6 to 10 muscular articulations. PI is 

 7-8 mm. long with 10 segments, stiffened, though usually less so than the succeeding 

 pinnules. P 2 is 13-13.5 mm. long with 11 or 12 segments. P 3 is 12.5-14 mm. long 

 with 13 segments. P 4 is 11.8 mm. long with 13 segments. P 6 is 11.3 mm. long with 

 13 segments. The first and second segments of the proximal pinnules have a moder- 

 ate flange on the outer side. The distal pinnules are 17 mm. long with 26 segments. 

 The disk is very deeply incised, and measures 6 by 15 mm. The color is violet-brown, 

 the proximal pinnules and a mediodorsal zigzag band on the arms brighter. 



In another specimen from Fiji the cirri have 53-60 segments, and are about 35 

 mm. long; the longest segments are from one-third again as broad as long to as long 

 as broad. The arms are broken. P! is 6.5-7 mm. long. P 2 is 10-12 mm. long. P 3 is 

 13 mm. long. P 4 is 12.5 mm. long. 



The third specimen from Fiji has the cirri up to 39 mm. long with 58-60 segments. 

 The arms are broken. P! is 9 mm. long with 1 1 segments. P 2 is 13 mm. long with 14 

 segments. P 3 is 14.5 mm. long with 15 segments. P 4 is 14 mm. long with 13 seg- 

 ments. None of the cirrus segments are as long as broad. 



Professor Gislen says that in the first and third specimens from Fiji the longest 

 cirrus segments are slightly broader than long, in the second specimen as long as broad, 

 thus a little shorter than in C. perspinosa, but longer than in C. vepretum. The cirri 



