A MONOGRAPH OF THE EXISTING CRINOIDS 499 



One of the specimens from Siboga station 81 is a typical example with 40 arms 

 95 mm. long; P 2 is especially stout and very stiff; there are four large P 2 on each post- 

 radial series. A similar specimen has 30 arms 75 mm. long. The third specimen is 

 smaller. 



The specimen from Pulo Condor is a fine example of the species. 



The specimen from the Danish Expedition to the Kei Islands station 104 is small. 



Hartlaub said that the only essential difference between the specimen from 

 Singapore collected by Jagor, which he assigned to palmata (=Lamprometra klun- 

 zingeri), and those that he described from the Red Sea lies in the quite different form 

 of the centrodorsal, which is rather thin and quite flat, with a moderately large circular 

 dorsal pole and the cirri confined to the margin. In the specimens from the Red 

 Sea the centrodorsal is thicker and the bare dorsal pole is smaller. This specimen, 

 which I examined in 1910, is small, with 27 arms about 70 mm. long. As it is rather 

 poorly preserved, the large size of the pinnules on the outermost sides of the post- 

 radial series is difficult to appreciate. The outermost 10 or 11 cirrus segments have 

 small sharp median tubercles. 



One of the specimens collected by Svend Gad at Singapore has 40 arms 65 mm. 

 long. The cirri are XXVI, 25, 20 mm. long; the distal cirrus segments are rather 

 sharply carinate. Pi is 7 mm. long with 20 segments. P 2 is 13 mm. long with 24 

 segments. P 3 is 5 mm. long. P 4 is the smallest pinnule, being only 4 mm. long. 

 The difference in size between the pinnules on the outer sides of the IIBr series and 

 the others is exceptionally well marked. Two others are similar to this. Another 

 specimen has 40 arms 55 mm. long. There are XXVI cirri, which are 12 to 15 mm. 

 long. The color of these four specimens is dull yellowish white, mottled and spotted 

 with yellow-brown. 



One of the specimens from Pulau Ubin has 41 arms 100 mm. long. The cirri 

 are XXVI, 15 to 20 mm. long. P, is 10 mm. long, with 29 segments. P 2 is 17 mm. 

 long, with 27 segments. P 3 is 5.5 mm. long, and P 4 is 4 mm. long. The color is very 

 deep, nearly black. The two other specimens are similar; one has 40 and the other 

 27 arms. 



The single mutilated individual from King Island in the Mergui Archipelago was 

 recorded by Carpenter as Antedon conjungens. Carpenter said that like the other 

 comatulids from this locality it is very darkly colored, while the two specimens found 

 by the Challenger on the Cebu reefs are light gray, with occasional dark patches, and 

 the margins of the lower parts of the postradial series are more produced toward the 

 ventral side than is the case in the Mergui form. The characters of the cirri and of the 

 arm divisions are, however, the same in both, and the pinnule arrangement is also 

 generally similar in the two types. The largest pinnule is P 2 , and this is much larger 

 on the outer than on the inner arms of each IIBr series. On the outer arms of each 

 IIBr series Pi is also of considerable size, but on the inner arms it is a good deal smaller. 

 Carpenter said that the chief point of difference between the Mergui and the Philippine 

 specimens is in the size of P 3 . On the outer arms of the Mergui individual its length 

 relatively to P 2 is but little less than in the type specimens from Cebu, but on the 

 inner arms the difference between P 2 and P 3 is more marked. Those of the typo 

 specimens are sometimes nearly equal, though not always so; but in the Mergui form 

 the difference is often considerable. Carpenter said that it is not so great, however, 



