92 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



duced into a narrow flange of uniform width, and the inner is in contact with that of 

 its fellow for about the proximal half, the two sides of the adjacent fu-st brachials then 

 divergmg at an angle that varies from broadly obtuse to acute. The second brachials 

 are larger than the fu-st, and the proximal and distal borders make a greater angle 

 with each other so that these brachials are almost triangular, the inner side bemg 

 extremely short or quite reduced to a point. The fu'st syzygial pau- (composed of 

 brachials 3+4) is slightly longer interiorly than exteriorly, and is from half again 

 to twice as broad as the median length. Toward the umer end of the distal border a 

 sharp angle indicates the end of the fulcral ridge. The next three brachials are oblong, 

 about three times as broad as long, with sharp angles on the distal borders indicating 

 the ends of the fulcral ridges. After the eighth the brachials become triangular, about 

 half again as broad as the maximum length, with the longer side slightly convex. 

 In the outer half of the arm the brachials become very obliquely wedge-shaped, re- 

 maining broader than long, and distally elongate. In profile view the dorsal siu-face 

 of the brachials in the proxunal half of the arm is seen to rise gradually to the distal 

 end, so that the distal end of one brachial is higher than the proximal end of the 

 brachial succeeding, though there is no overlapping. The synarthrial tubercles on 

 the IIBr and IIIBr series and between the first two brachials become progressively 

 less and less marked. 



Pi is 11 mm. long, and is composed of 15 segments. It is slightly stiffened and 

 tapers evenly and gradually from the base to the slender, but not flexible, tip. The 

 first segment is slightly broader than long, or about as long as broad, the second, which 

 is slightly trapezoidal, is from half again to nearly twice as long as the width of the 

 distal (shorter) end, and the third is nearly three times as long as broad. The seg- 

 ments following are about foiu* times as long as broad, becoming even longer in the dis- 

 tal portion of the pinnule. P2 is 11.5 mm. long with 16 segments. It resembles Pi 

 and is scarcely stouter basally, but it tapers more gradually and therefore is slightly 

 stouter and stifl'er in the distal half. P3 is 10.5 mm. long with 15 segments, and 

 resembles Pj. P4 is 6.5 mm. long with 13 segments, and tapers more rapidly than the 

 pinnules preceding. The fij-st segment is twice as broad as long, the second is nearly 

 as long as broad, the third is nearly twice as long as broad, and the fifth and following 

 are three or four times as long as broad. The fifth or sixth and following segments 

 have the distal edge dorsally slightly everted and armed with fine short spines. Ps is 

 5 mm. long with 12 segments. It is about as stout at the base as P4, but it tapers much 

 more rapidly and becomes more delicate distaUy. Its component segments are 

 relatively shorter than those of P4. 



The color in alcohol is purple, the elements of the division series with central 

 patches of yellow, and the brachials each with a terminal stripe of yellow on the pin- 

 nule-bearing side. In their outer halves the arms become banded, series of purple 

 brachials with terminal yeUow marks alternating with series of yellow brachials with 

 purple proximal marks. The lower pinnules are yellow, more or less washed with 

 purple at and toward the ends of the segments. The centrodorsal and the cirri are 

 yeUow. 



Locality.— OS Cape Padaran, southern Annam (lat. 11° 38' N., long. 109° 41' E.) ; 

 146 meters; cable repair ship Patrol, Eastern and Associated Telegraph Company; 



