65 



bear high carinate processes which rapidly diminish in height distally ; 

 Pj is similar to Pd, but the height of the dorsal processes on the 

 segments is much reduced; the ossicles of the IBr series and the 

 earlier brachials have the edges swollen and everted, and more or 

 less scalloped or beaded (Ti mor and the Philippine Islands) venustulus 

 c 2 slight and uniform, if any, processes on the proximal segments of the 

 proximal pinnules 



d 1 the ossicles of the IBr series and the earlier brachials have 

 everted and more or less produced edges, so that the dorsal 

 profile of the base of the arm is strongly serrate 



e 1 lower pinnules very sharply triangular; oh P x and P a the 

 distal edges of the segments are very strongly produced 

 at the prismatic angles, so that the pinnules have a strongly 

 serrate dorsal profile (Philippine to the Lesser 



Sunda Islands) serripinna 



e 3 P x and P a rounded triangular, the distal edges of the 

 segments everted and spinous all around the dorsal side, 

 this being slightly, if at all, accentuated at the prismatic 



angles (Andaman Islands to Ti mor) ornatus 1 ) 



d 3 the edges of the ossicles of the IBr series and the earlier 

 brachials are only slightly, if at all, everted, so that the dorsal 

 profile of the base of the arms is smooth 



e 1 third segment of P x and P a half again as long as broad 



(B u r m a) gracilis 



e 2 third segment of P 1 and P a not longer than broad (P h i- 

 lippine Islands and the Ma cel es field Bank to 

 the Moluccas, the Kei and Lesser Sunda Islands) indivisus*) 



i. Eudiocrinus junceus A. H. Clark. 



A. H. Clark. Proc. Biol. Soc. Washington, vol. 25, 1912, p. 25. 

 Stat. 167. 2°35'.5S., i3i°26'.2E. 95 Metres. 16 Ex. 



The centrodorsal is discoidal, moderately thick, the sides sloping inward rather* strongly ; 

 the dorsal pole is from 1 mm. to 1.5 mm. in diameter, and flat; the cirrus sockets are arranged 

 in two closely crowded irregular rows. 



The cirri are XXV, 22 — 23 (usually 22), 23 mm. long; the apical cirri are 12 mm. 

 long with 1 7 segments. The cirri are greatly elongated with greatly elongated segments, slender, 

 tapering gradually from the base to the tip, though rather more in the first three or four 

 segments than subsequently. As a whole the cirri strongly suggest an approach to the type 



1) Synonym Eudiocrinus minor A. H. Clark. 



2) Synonym Eudiocrinus granulaties Bell. 

 S1BOGA-EXPEDITIE Xl.II />. 



