A MONOGRAPH OF THE EXISTING CRINOIDS 315 



a. 1, 2, 9, 14, 19, 24, etc. 

 \b. 2, 12, 16, 21, 26, etc. 

 . jc. 1,2,9, 14, 19, 24, etc. 

 1 Id. 1, 2, 9, 14, 19, 24, etc. 

 ' e. 2, 9, 14, 18, 23, etc. 

 /. 2, 10, 16, 20, 24, etc. 

 g. 1, 2, 8, 13, 18, 23, etc. 



a. 1, 2, 5, 10, 14, 19, 24, etc. 



T , ( b. 1, S, 13, 18, 23, etc. 



Me. 1, 5, 10, 15, 20, 25, etc. 



\d. 1, 2, 4, 9, 14, 18, 23, etc. 



In color Professor Doderlein's specimens were whitish with red-brown arm fur- 

 rows and spots on the pinnules. 



In the British Museum I examined 2 small specimens from Prince of Wales 

 channel in 9.1-12.8 meters, one of which now has III, the other IV cirri. These are 

 the types of Bell's Actinometra paucicirra. 



As described by Bell the centrodorsal is small, low, and rounded. The cirri are 

 V-VI, 15-18, about 8 mm. long. A number of the cirrus segments are longer than 

 broad. The opposing spine is exceedingly small. The radials are visible. The 

 IBri are very wide, but not in contact laterally. The elements of the IBr series are 

 united by syzygy, and the IIBr series are 2 (1 + 2). The 20 arms are about 70 mm. 

 long. The first 4 brachials are pretty regularly oblong, the fifth is faintly wedge- 

 shaped; after this the wedge-shaped form becomes more marked, but the edges of 

 the brachials do not overlap. Syzygies occur between brachials 1 + 2, 9 + 10, and 

 14 + 15, then at intervals of 4-6 muscular articulations. P] is longer than P 2 , and 

 P 3 is longer than P 4 . P : alone is of any considerable size; its segments are produced 

 into very prominent edges. The succeeding pinnules are small; further out they 

 enlarge somewhat, but are never at all long. The disk is 7 mm. in diameter. There 

 is a slight development of calcareous deposit between the bases of the arms. The 

 color is creamy white, rather darker below. 



The specimen collected by the Alert at Albany Island is large and typical with 

 20 arms. 



Of the 2 specimens from Albany Passage, 1 has 19 and the other 20 arms. 



The 2 specimens collected by the Alert in Torres Straits in 7.3 meters both have 

 20 arms. One has one cirrus stump remaining. In both the centrodorsal has not 

 yet sunk to the level of the dorsal surface of the radials. 



Of the 2 specimens from Port Molle, 1 is a fine large individual with 20 arms 

 120 mm. in length. The other is a young example with 20 arms 60 mm. long and the 

 cirri VII, 15, 11 mm. long. The cirri are confined to the interradial angles of the 

 centrodorsal, 3 of which have a single cirrus and the other 2 each a pair. The cirri 

 are moderately slender. The first segment is very short, the second is not quite so 

 long and broad, the third is slightly longer than broad, and the fourth and following 

 are approximately equal, about half again as long as broad. The penultimate is 



