84 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



jK Outer IIIBr series on each ray 2, the inner 4 (3 + 4); following division series 

 wholly, or mostly, 4 (3 + 4); the typical arrangement of the IIIBr series 

 is subject to some variation, especially on the posterior arms, following 

 IIBr 2 series; seldom less than 60 arms (Maldive Islands and Ceylon to 

 Australia, soutli to the Abrolhos Islands, Western Australia, and the 

 Queensland coast, the Solomon, Caroline, and Philippine Islands, and 



Macclesfield Bank; 0-548 meters) Comanthina, p. 457. 



j2. No regularity in the distribution of IIIBr series of 4 (3 + 4) and 2; very 

 seldom so many as 60 arms (Madagascar, Mauritius, the Seychelles, and 

 Baluchistan to tropical Australia, New Caledonia, Fiji, Tonga, the 

 Gilbert, Caroline, Pelew, and Bonin Islands, southern Japan, and Amoy, 



China; 0-110 meters) Comanthus, p. 527. 



h-. All of the IIIBr series 2; or, exceptionally, IIIBr 4 (3 + 4) series will follow IIBr 

 2 series, especially on the posterior arms (Java to Australia, south to the 

 Abrolhos Islands, Western Australia, and Ballina, New South Wales, tlie 

 Bonin Islands, southern Japan, the Philippines, Formosa [Taiwan], and 



Fukien Province, China; 0-150 meters) Comantheria, p. 483. 



9'. Distal cirrus segments each with a straight transverse ridge dorsally; usually 10 

 and never so many as 20 arms (Bass Strait and the coast of Victoria; 119[?91]- 



183 [?311] meters) Comanthoides, p. 240. 



e''. IIBr series all 2; but some, at least, of the following division series are 4 (3+4) (Mada 

 gascar, Mauritius, the Seychelles, and Baluchistan to tropical Australia, New Cale- 

 donia, Fiji, Tonga, the Gilbert, Caroline, Pelew, and Bonin Islands, southern Japan, 



and Amoy, China; 0-110 meters) Comanthus, p. 527. 



M. Cirri absent. 



c'. First pinnule on the undivided arms on the second brachial; a syzygj' between brachials 

 3 + 4 or 1 + 2, or in both locations, but never between brachials 2 + 3; IIIBr series never 

 3 (2 + 3). 

 dK Some, or all, of the division series of 4 elements; segments of the genital pinnules not 

 especially short and broad. 

 e'. IIBr series all, mostly, or in part, of 4 elements. 

 p. Elements of the IBr series and the first 2 ossicles following every axillary united l^y 

 syzygy; IIBr series 4 (1 + 2, 3 + 4), or 4 (1 + 2, 3 + 4) and 2 (1 + 2); IIIBr and fol- 

 lowing division series 2 (1 + 2), only very exceptionally 4 (3 + 4) (Maldive Islands to 

 Australia, south to Port Walcott, Western Australia, and Port Mollc, Queensland, 

 Fiji, the Gilbert [Kingsmill] Islands, southern Japan, the Philippines, Macclesfield 



Bank, and the coast of China; 0-216 [?538] meters Comaster, p. 409. 



p- Elements of the IBr series and the first 2 ossicles following every axillary united by 

 synarthry; IIBr series 4 (3 + 4), or 4 (3 + 4) and 2. 

 9'. Some or all of the IIIBr series 4 (3 + 4). 



h'. All of the IIIBr series 4 (3 + 4) (Ceylon to tropical Australia, New Caledonia, 

 Fiji, Tonga, the Gilbert, Caroline, Pelew, and Bonin Islands, and the Philip- 

 pines; 0-110 meters) Comanthus, p. 527. 



h^. IIIBr series both 4 (3 + 4) and 2. 



i'. Outer IIIBr series on each ray 2, the inner 4 (3 + 4); following division series 

 wholly, or mostly, 4 (3 + 4); IIBr series wholly, or mostly, 4 (3 + 4); the 

 typical arrangement of the IIIBr series is subject to some variation, on the 

 posterior arms especially, following IIBr 2 series; seldom less than 60 arms 

 (Maldive Islands and Ceylon to Australia, south to the Abrolhos Islands, 

 Western Australia, and Bass Strait, the Solomon, Caroline, and Philippine 



Islands, and Macclesfield Bank; 0-548 meters) Comanthina, p. 457. 



iK No regularity in the distribution of the IIIBr series of 4 (3 + 4) and 2; seldom 

 more than 60 arms (Ceylon to tropical Australia, New Caledonia, Fiji, 

 Tonga, the Gilbert, Caroline, Pelew, and Bonin Islands, and the Philippines; 

 0-110 meters) Comanthus, p. 527. 



