56 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



The radials are concealed. The IBri are short, about four times as broad as long. 

 The IBrj (axillarios) arc low pentagonal, broader than long, with the lateral margins 

 very short. The synaithrial articulations are not at all close, the lower brachials in 

 particular being very noticeably separated except at the very margin. 



The 10 arms are rather unequal, the longest exceeding 50 mm. The number of 

 brachials exceeds 140 on the longest arm. The form of the brachials and the position 

 of the syzygies is essentially as in T. nomima. 



Pi is about 8 mm. long with some 20 segments, of which the basal are as broad as 

 long and oven distally the length barely exceeds the width, yet owing to the lack of 

 constrictions between the segments the monihform character of the pinnule is not as 

 striking as it might be. P2 is similar but is longer and stouter; the number and relative 

 proportions of the segments is about the same. P3 is conspicuously larger in every way, 

 nearly 20 mm. long with about 24 segments. P4 is very similar to P3 and httle, if at 

 all, smaller. Pj and the subsequent pinnules decrease uniformly in size to about Pn 

 or Pjo, after which the length increases a little but the stoutness does not. The spininess 

 of the distal margins of the pinnule segments is more or less evident on P, to Pio, but is 

 not very conspicuous. 



The color (dry) is variegated with whitish, yellow, and purple; the ground color of 

 the centrodoi-sal, cin-i, bases of arms and pinnules, is whitish, of the dorsal side of the 

 anus j'ollow. On each cirrus segment, excepting the most prox-imal and the two 

 terminal, there is a conspicuous purple spot, and often these spots tend to run together 

 dorsally, maldng an incomplete or sometimes complete, girdle around the segment. 

 Each pinnule has from 8 to 10 purple bands of somewhat indefinite position and com- 

 pleteness. Each basal brachial has a large purple spot on each side dorsally, but beyond 

 the eighth the spots tend to coalesce more or less into an indefinite band of dull purple 

 or dusky. The regenerating portions of the arms are a uniform hght yellow without 

 markings, but the pinnules borne on them are banded. The disk is variegated with 

 whitish and purple. 



N'otes. — Dr. H. L. Clark said that there are three paratypes, but all are more 

 badly broken than is the holotype. One of these, taken at the same time and place, is 

 similar in size and structure so far as can be determined, but is much darker in color, 

 the yellow on the arms is pale, the purple is much more abundant, and the spots have 

 coalesced into broad irregular bands. The two other paratypes show the same contrast 

 in color, but it is even more marked. The Ughter one is nearly white (possibly the 

 yellow has been bleached in the alcohol in which it is preserved), variegated with a 

 dull reddish purple (the shade may have been altered m alcohol), and with the pinnules 

 less frequently and conspicuously banded. The darker specimen is deep red-purple 

 with a whitish middorsal hne on the IBr series and the pinnules purple and white 

 banded as usual. 



Dr. H. L. Clark said that this unusually lovely comatuhd is very sensitive to 

 handling, and only the holotype has any arms still attached to the calyx. Two of the 

 paratypes were taken on September 5, 1929, "at extreme low water, far south of the 

 jetty" at Broome. His field notes go on to say, "ten long, slender, very graceful arms; 

 finely variegated \vith purple and white; very delicate and went all to pieces in pail, 

 breaking the arms up into little bits." 'When the two specimens taken in 1932 were 

 dredged, the present holotype was very httle damaged, so it was possible by plunging 

 It at once into strong alcohol to get a very good specimen, even the cirri remaining in 



