A MONOGRAPH OF THE EXISTING CRINOIDS 233 



as long exteriorly as interiorly. The first syzygial pair (composed of brachials 3 + 4) is 

 almost oblong, though slightly longer interiorly than exteriorly, slightly broader than 

 long. The next four brachials are very slightly wedge-shaped, about three times as 

 broad as the median length. On the brachials following the ends become more oblique, 

 and after about the twelfth the brachials become practically triangular, about as long 

 as broad, after the first quarter of the arm obliquely wedge-shaped, and terminally 

 elongate. The first ten or twelve brachials are faintly subcarinate. The triangular 

 and succeeding brachials have the distal edge slightly produced and armed with ex- 

 ceedingly fine spines. 



PI is 5.5 mm. long with 14 segments, tapering rapidly on the first four segments 

 and thence more gradually to the tip. The second and third segments are about as 

 long as broad, and the sixth and following are about three times as long as broad. 

 The eighth and following have their distal borders slightly everted and armed with 

 fine spines. P 2 is 8.5 mm. long, much stouter basally than P! and tapering evenly 

 and gradually to the tip; it is stiffened. It is composed of 16 segments of which the 

 first is trapezoidal, about twice as broad as long, the second is very slightly longer than 

 broad, and the fourth and following are about twice as long as broad. The fourth 

 and following segments have the distal edge slightly everted and armed with fine 

 spines which increase in prominence distally. P 3 is 5.5 mm. long with 12 segments. 

 It is not much less stout basally than P 2 , but it tapers much more rapidly. It is 

 similar to P 2 , but more slender distally. P< is 4 mm. long with 12 segments, similar to 

 P 3 but tapering somewhat less rapidly and with the spines on the distal ends of the 

 segments slightly more conspicuous. P 6 is similar to P t , with 11 segments. The 

 pinnides following are more slender in the distal portion, and the later pinnules 

 increase in length. All the lower pinnules are more or less stiffened, as in Decametra 

 tigrina. 



Notes. In the specimens from Vatek van Toeal in about 1-2 meters P a may or 

 may not be present. The cirrus segments vary from about as long as broad to twice 

 as broad as long. P 2 is usually rather stout, but may be slender. The distal angles 

 of the segments may be simply produced into a blunt process, or the entire distal 

 border of the segments may be spiny. 



The specimen from the Danish Expedition to the Kei Islands station 11 has the 

 arms 115 mm. long. 



The specimens from the Danish Expedition to the Kei Islands station 14 have 

 the arms up to 105 mm. long. 



In one of the two small specimens from the Danish Expedition to the Kei Islands 

 station 18 the arms are 25 mm. long. P : and P 2 are present, but the next pinnule is 

 on the twelfth or thirteenth brachial, with sometimes a very small one on the brachial 

 preceding. 



One of the specimens from the Danish Expedition to the Kei Islands station 31 

 has the arms 85 mm. long and the cirri X, 17-18. P 2 has 14 segments. The other 

 three specimens are small. 



The specimen from the Danish Expedition to the Kei Islands station 36 is very 

 small. 



The type specimen of this species is from the Danish Expedition to the Kei 

 Islands station 38. In another specimen from this station the arms are 100 mm. 



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