A MONOGRAPH OF THE EXISTING CRINOIDS 101 



to the width of the segments that bear them. P2 is not quite so stout basally as Pi, 

 and is 13 or 14 mm. in length. P4 and the following pinnules are about 8 mm. long, 

 and bear long gonads. The distal pinnules are from 8 to 9 mm. long. The 2 basal 

 segments of P2, P3, and P4 are very strongly carinate. 



The mouth is usually radial and is marginal or situated about half way between 

 the center and the periphery of the disk. The anal area is naked, irregularly studded 

 with large thick concretions, or entirely covered wath smaller irregular plates each of 

 which bears several blunt tubercles. The disk is from 15 to 20 mm. in diameter. 



Color oj preserved specimens. — The green specimen which served as the subject 

 for a colored illustration by Dr. H. L. Clark (1921, pi. 2, fig. 2) has in alcohol changed 

 to a uniform dark brown. Another recorded in Doctor Clark's notes as purple and 

 green with the tips of the pinnules rusty changed when dried to a uniform olive green, 

 as did a third, which in life was yellow green and blackish. One recorded as rich 

 red purple and very viscid when alive as dried is a light uniform slaty. 



The color in alcohol or dried is reddish or blackish brown or dull green or slaty, 

 usually more or less profusely speckled with small yellow or whitish spots. 



Notes. — In the specimen recorded by Chadwick from Cejdon there are 20 arms 

 and XX cirri, 8 of the last being quite small and immature. 



The specimen from Ceylon collected by Doctor Sarasin has about 35 arms, which 

 are about 110 mm. in length. 



The specimen in the Indian Museum labeled "?India," which probably came 

 from Ceylon, is a beautiful example with 31 arms 110 mm. long; 4 internal and 7 

 external IIIBr series are present. The cirri are 25 mm. long. 



The 3 specimens which were collected by Dr. John Anderson in the Mergui 

 Archipelago served Dr. P. H. Carpenter as the types of Actinometra notata. His 

 description of this species agrees in minute detail with the description here given, 

 except that the length of Pi on the outermost arms of each ray is nearly 40 mm. 



In the smallest of these 3 specimens the disk is entirely naked instead of bearing 

 calcareous granules in the anal interradius as usual. 



The specimen from Padaw in the Mergui Archipelago has 34 arms and agrees well 

 with the types of Carpenter's notata. 



The specimen from the Sunda Straits is yoimg with 15 arms 65 mm. long; the 

 cirri are XXIV, 17-18, 15 mm. long. 



The specimen from Siboga station 322 has 33 arms 170 mm. long and the cirri 

 XVIII, 21-23, 25 mm. long; the ninth is the transition segment. The whole animal 

 is large and robust. 



The larger specimen from Siboga station 99 has 37 arms (on the 5 rays 6, 6, 9, 7, 9) 

 95 mm. in length; the cirri are XXV, 25-26 (usually 25), from 20 to 23 mm. long 

 and moderately slender; the twelfth, thirteenth, or fourteenth is a transition segment. 

 The smaller specimen has 31 arms. 



The specimen from Siboga station 89 is small, with 30 arms. 



The example from off Neira, Banda, has 45 arms 110 mm. long; the cirri have 

 21-25 segments. 



The specimen from the Danish Expedition to the Kei Islands station 17, appar- 

 ently of this species, is small with 10 arms. The centrodorsal is thm discoidal with 



