from the Dutch East Indies. 39 



project beyond the profile of tlie cirrus as seen in dorsal view, 

 but beyond the fourth segment the ridge becomes narrower, 

 beyond the sixth dividing more or less completely into two 

 transversely oblong sharp ridges or small sharp spines ; the 

 antepenultimate segment possesses a single dorsal spine ; 

 the opposing spine is much larger than the preceding dorsal 

 processes. 



The radials are just visible beyond the centrodorsal ; the 

 IBri are very short, about four times as broad as long, the 

 proximal and distal edges parallel, the lateral edges slightly 

 convergent ; there are slight rounded ventrolateral pro- 

 jections ; the axillaries are broadly pentagonal, half again as 

 broad as long, with slight rounded ventrolateral processes 

 resembling those on the IBr^ ; the synarthrial tubercles are 

 moderately developed. 



The ten arms are very slender, 35 mm. to 40 mm. long, 

 and resemble those of the other species of the genus ; there 

 is a faintly indicated rounded median carination on the lower 

 oblong brachials. 



Pi is 2 mm. long, with eight or nine segments, nearly as 

 stout basally as Pg? but tapering more rapidly and becoming 

 slender and delicate distally; the first segment is short, the 

 following gradually increasing in length and becoming 

 slightly longer than broad on the third and about twice as 

 long as broad distally ; the distal edges of the outer seg- 

 ments are slightly spinous ; Pg is 3 mm. long, stitf and 

 spine-like, though slender, tapering slowly and evenly from 

 the base to the tip, with eight or nine segments, of which 

 the first 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 remainder are about three times as long as broad ; the 

 pinnule is rather strongly prismatic, and the distal edges of 

 the third and following segments bear long and prominent 

 spines on the prismatic angles ; P3 is 2 mm. long, with eight 

 segments, of which the distal are considerably elongated, 

 small and slender, slightly stiffened ; P^ is 1-25 mm. long, 

 very delicate, and not stiffened, with nine segments, of which 

 the distal are much elongated ; Pg is similar, but slightly 

 shorter; the distal pinnules are 2-5 mm. long, with thirteen 

 segments, of which the second and third are strongly carinate 

 and the outer are very greatly elongated. 



Type Locality. ' Siboga ' Station No. 117 ; entrance to 

 Kwandang Bay, Celebes; 80 metres. 



Prometra parva, sp. n. 

 The cirri are XIV, 14-15, 5'5 mm. long, and resemble 



