A MONOGRAPH OF THE EXISTING CRINOIDS 497 



portion from about the eighth or tenth segment onward; they are composed of 27-30 

 segments. Two of these specimens have only XXII-XXVI cirri with 25-28 segments, 

 which are very stout. The third specimen has XXXVIII cirri, which in part are more 

 delicate. The last-mentioned three specimens are light brown. The first five are 

 dark red-brown, with the cirri somewhat lighter. 



Another specimen from Amboina recorded by Reichensperger as Dichrometra 

 palmata (=klunzingeri) has 26 arms 85 mm. long. The cirri are XXII, 24-25, 

 about 16 mm. long. The cirrus segments from the fourth to about the twelfth are 

 longer than broad. The distal segments bear blunt spines. P 2 is not quite twice so 

 long as PI and is composed of 22 segments. The basal segments of the proximal 

 pinnules show an inclination to carination. The color is dark brown broadly banded 

 with light brown. 



The larger specimen from Siboga station 231 (Amboina) is a magnificent example 

 with 40 arms 125 mm. long. P 2 is 22 mm. long with 40 segments and is greatly enlarged 

 on all the arms, though considerably larger on the outer arms than on the inner. The 

 other individual is smaller with 40 arms 80 mm. long. 



The specimen from the Bay of Amboina, according to Professor Koehler, has the 

 cirri XXXIII, 23-25. The dorsal spines on the distal segments are little evident. 

 All the IIBr and IIIBr series are present, so that there are exactly 40 arms, which are 

 80-100 mm. long. The inequality of the lower pinnules on the outer and inner arms is 

 very marked. The disk is about 10 mm. in diameter. 



The single individual from Siboga station 89 has 40 arms 85 mm. long and the 

 cirri XXVIII, 23-24, 20 mm. long. The lower pinnules on the outermost arms of the 

 postradial series are markedly longer than the others. P 2 is 15 mm. long, with 30-32 

 segments. 



The specimen form Siboga station 193 is similar to those from station 279. 



The specimen from Siboga station 248 has 40 arms 120 mm. long. P 2 is greatly 

 enlarged on the outer side of the outermost arms of each postradial series and con- 

 siderably enlarged on the midradial side of the IIBr series, but is small elsewhere. 



The details of the four specimens from Siboga station 303 (Haingsisi) are as fol- 

 lows: One has about 40 arms 75 mm. long. P 2 is much enlarged on the outer side of 

 the postradial series and considerably enlarged on the arms next the midradial line. 

 Another has 22 arms 75 mm. long. All the P 2 are enlarged, more so than in the 

 preceding specimen. A third specimen has 23 arms 75 mm. long; it is similar to the 

 first. The fourth specimen has 30 arms 65 mm. long and is also similar to the first. 



The specimen from Siboga station 115 is a magnificent example with 40 arms 110 

 mm. long. The division series are entirely and rather widely separated. The dorsal 

 pole of the centrodorsal Is very slightly concave and is 4.5 mm. in diameter. The 

 cirri are XIX (with numerous additional rudimentary cirri), 26-27, 20 mm. long. 

 The distal cirrus segments bear slight dorsal tubercles. P 2 is 16 mm. long, very stout 

 but tapering evenly distally to a delicate tip, and is composed of 29 segments. The 

 lower pinnules on the outer side of each IIBr series are greatly enlarged instead of only 

 those on the outer side of each IBr series as in smaller specimens. 



The specimen from Siboga station 125 has 20 arms 80 mm. long. One IBr series 

 does not divide further. P 2 is greatly enlarged on the outer side of the IBr series. 



The specimen from Java collected by M. Philibert (labeled Comatula dividuus) 



