A MONOGRAPH OF THE EXISTING CRINOIDS 411 



longer than the distal segments of P,. P 3 is 15 mm. long, resembling P 2 . P 4 is 

 12 mm. long, with 11 segments, resembling P 3 . The pinnules following decrease in 

 length and also slightly in stoutness, P r being 7 mm. long, with 10 segments, then 

 gradually lose their peculiar stiffness, and later gradually increase in length. The 

 distal pinnules are 10 mm. long, with about 20 segments, of which the first two are 

 not so long as broad, the third is about as long as broad, and the remainder are about 

 one-third again as long as broad, becoming half again as long as broad distally. 



The color in alcohol is dull yellowish, with the division series and arms thickly 

 covered with small red spots and blotches; the ventral perisome is brown. 



Notes. The specimen from Barias Island is a fine example of the species closely 

 resembling the type specimen of Stephanometra coronata in the Indian Museum at 

 Calcutta, with which it was directly compared. It has 34 arms about 150 mm. long; 

 four of the postradial series bear seven arms each, and one bears six. As in the type 

 specimen of coronata, the division series omitted are always internal. The cirri are 

 XVIII, 27-29, from 26 to 28 mm. long. The color is dark purple. 



One of the specimens from Port Galera, Mindoro, has about 30 arms, which are 

 about 170 mm. long; the longest cirri are 30 mm. long and are composed of 34-37 

 segments. Another has 31 arms 160 mm. long. A third has 33 arms 155 mm. long. 

 A fourth has about 35 arms 150 mm. long. Two others have 38 and 36 arms. 



The specimen from Siboga station 99 is small with 29 arms; in color it is a uniform 

 dull light yellow. 



In the specimen from Pulo Condor as described by Gisle"n the diameter of the 

 centrodorsal is 6.5 mm. and the cirri are XXXIV, 31-32, from 26 to 28 mm. long. 

 The four basal segments are short, the fifth is as long as broad, the eighth is half 

 again as long as broad, and the distal are one-third again as broad as long. From 

 the thirteenth onward there is a triangular dorsal spine, projecting in the distal half 

 of the segment. The opposing spine is considerably larger than the spine on the 

 segment preceding. The terminal claw is curved, and is a little longer than the seg- 

 ment that bears it. There are 6-8 arms on each postradial series, or about 35 in all. 

 They are 115+ mm. long. The arm bases are widely separated but bear ventro- 

 lateral flanges which approach the flanges from the proximal portions of the adjacent 

 postradial series. The synarthrial tubercles are rather inconsiderable, and are not 

 sharply set off. PI is 14 mm. long, with 12 segments. P 2 is 18 mm. long, with 14 

 segments. P 3 is 13 mm. long, with 12 segments. The pinnules following decrease in 

 length. All the proximal pinnules are similar, with smooth and very long cylindrical 

 segments, of which the longest are between three and four times as long as broad. 

 None of them are specially stiffened, but because of the elongated segments they are 

 rather inflexible. The distal pinnules are 10.5 mm. long, with 28 segments. The 

 color is dark brownish violet. 



The specimen from Siboga station 40 has 28 arms, which are up to about 85 mm. 

 hi length. The cirri are XVI, 22-24, 19 mm. long; the eighth or ninth is a transition 

 segment. PI is 11 mm. long, with 12 segments. P 2 is 12 mm. long, with 11 segments. 

 P 3 is 9 mm, long, with 9 segments. P 4 is 7 mm. long, with 9 segments. P 6 is 5 mm. 

 long, with 9 segments and is slightly stiffened. The first four pinnules are all stiff and 



