from the Dutch East Indies. 37 



peiuiltimate the two tubercles fuse into a slnole trausverselj 

 elongate tuberclej which gradually becomes less and less 

 elongate and on the antepenultimate appears as a single 

 small rounded tubercle situated near the proximal margin of 

 the segment; when the cirri are viewed from the side no 

 distinct dorsal processes are seen (though the dorsal profile 

 is serrate) until the distal half, when the tubercles appear as 

 low blunt dorsal spines. 



Pi is small and weak, 5 mm. long, with fourteen segments, 

 tapering with moderate rapidity in the proximal half and 

 becoming very slender distally ; the first segment is short, 

 the following gradually increasing in length and becoming 

 about as long as broad on the fourth or fifth, and about 

 twice as long as broad distally; the pinnule is slightly 

 prismatic ; Po is 9 mm. long, with seventeen segments, not 

 greatly larger than Pj basal ly, but tapering evenly from the 

 base to the tip and therefore appearing stouter; the first two 

 segments are slightly broader than those following, and are 

 mucli broader than long ; the third segment is slightly broader 

 than long, the fourth is slightly longer than broad, and the 

 following are about half again as long as broad, becoming 

 twice as long as broad terminally ; the pinnule is rounded 

 prismatic ; the fourth and following segments have slightly 

 produced and spinous distal edges, this character gradually 

 increasing in extent distally and being most marked along 

 the prismatic ridge; P3 is 6 mm. long, with fourteen seg- 

 ments, and is similar to Pj except in size ; P4 is 5 mm. long, 

 with thirteen segments, and resembles P3; P5 is 4*5 mm. 

 long, with fourteen segments, and resembles P4, but the 

 component segments are proportionately shorter ; Pg is 4 mm. 

 long with fifteen segments, and resembles P5 ; the following 

 pinnules are similar to Pg; the distal pinnules are very 

 slender, 7 mm. long, with twenty-one segments, of which the 

 outer are about twice as long as broad. 



The ten arms are 75 mm. long. 



Type Locality. ' Siboga ' Station No. 99 ; anchorage off 

 North Ubian, between Borneo aud Mindanao; 16-23 metres. 



Prometra Icevipinna^ sp. n. 



The centrodorsal is discoidal, with a broad flat circular 

 dorsal pole 2 mm. in diameter; the cirrus sockets are 

 arranged in a single closely crowded marginal row. 



The cirri are XIV, 18-23, 13 mm. long : the first seg- 

 ment is very short, the following gradually increasing in 

 length and after the tenth or eleventh becoming about as 



