652 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



The specimens from near the Pescadores Islands bear the manuscript name 

 Antedon mutabilis Liitken. 



The specimen from the Macclesfield Bank in 18-24 meters has 20 arms and the 

 cirri II, 11. This is a slender example, with the spinosity of the brachials, pinnulars, 

 and pinnule tips exaggerated. 



Of the 2 specimens from the Macclesfield Bank in 24 meters the larger has 20 

 arms. 



Of the 4 specimens from Macclesfield Bank in 24-66 meters, 1 has 30 arms and 

 V cirri. Another has 21 arms and IV cirri; the 10 IIBr series are 2; the single IIIBr 

 series, which is internally developed, is 4 (3 + 4). The 2 remaining have each 20 

 arms; 1 has VII, and the other no cirri. 



Of the 4 specimens from Macclesfield Bank in 40-55 meters, one has 22, one 18, 

 one 16, and one 14 arms; the 16-armed specimen has II cirri. 



The example from the Macclesfield Bank in 47 meters has 14 arms. 



The specimen from the Macclesfield Bank in 53-58 meters has 16 arms. There 

 are no IIIBr series. There are III cirri, all situated on one semicircumference of the 

 centrodorsal. 



The example from the Macclesfield Bank in 36-64 meters has 13 arms. 



The specimens from Port Galera, Mindoro, present the following characters: 



The 21 arms are 160 mm. in length. While the central portion of the animal is 

 no larger than usual, the arms are excessively elongated and attenuated. Of the 10 

 IIBr series, 6 are 2 and 4 are 4 (3 + 4). There are II nonfunctional cirri. 



There are 25 arms. The centrodorsal is extremely thin and irregularly pen- 

 tagonal in shape. There are II nonfunctional cirri. 



Two others have, respectively, 28 arms 125 mm. long and 21 arms 70 mm. long. 



Carpenter gave the characters of variety 2 of Actinometra polymorpha from 

 Cabulaun (Cabulan) as follows: 



The centrodorsal is small, but rather thick. 



The cirri are X, 11-12. The fourth and fifth segments are the longest. The 

 spines on the dorsal distal border begin from the middle segments, and the opposing 

 spine is well marked. 



The IBr t are only incompletely united. The elements of the IBr series are very 

 convex and are much higher than the radials. 



There are 29 arms. 



The distal intersyzygial interval varies from 2 to 11 muscular articulations, but 

 is usually 4. 



The terminal combs are limited to the first 5 brachial pinnules and the pinnules on 

 the division series. The pinnules of the seventh and next succeeding brachials have a 

 dorsal keel, and the distal ends of their segments are much wider than the proximal. 



The color in alcohol is grayish brown; the median dorsal line of the postradial 

 series is marked by a white line with dark borders which is lost about the middle of the 

 arms. 



