72 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



The color in life is purplish brown, the skeleton nearly white; the 

 disk is black. 



Ti/pe.—Odt. No. 22G52, U.S.N. M., from Alhafross station No. 4918; 

 30° 22' 00" north latitude, 129^ 08' 30" east longitude (Eastern Sea); 

 361 fathoms; Auo-ust 13, 1906. 



2. ANTEDON RARA, new species. 



Centro-dorsal large and discoidal, bearing about 20 cirri. These are 

 5 mm. long, with 8 or 10 joints, the basal half greatl}^ elongated, cen- 

 trally constricted, the distal short and compressed. 



Second radials bareh^dsible; axillaries pentagonal, wider than high, 

 with a S3^z3"gy; 10 arms 35 mm. long, the lirst 3 brachials oblong, 

 the remainder quadrate (the fifth to the ninth almost triangular) 

 becoming elongate distally. A syzygy in the third brachial, another 

 about the tenth, and others distally at intervals of about 2 joints. 



First two (outer) pinnules the longest, with about 20 short joints, 

 bearing a coml) distally, as in Coitiatida. The third to the sixth pin- 

 nules are shorter, without combs, and bear much swollen rounded 

 genital glands on the second and third joints; distally the pinnules are 

 longer and more slender. Disk that of a tj^pical Antedon. 



The color in life is light clear yellow, the cirri white. 



Type.— Cvii. No. 22605, U.S.N. M., from Alhatross station No. 4892; 

 32° 27' 30" north latitude, 128° 33' 00" east longitude (Eastern Sea); 

 181 fathoms; August 9, 1906. 



3. ANTEDON HARTLAUBI,rt new species. 



Centro-dorsal a thick disk, the pole beset with small spines, bearing 

 about 30 marginal cirri; these are smooth, without dorsal spines, 20 mm, 

 long, with 15 remarkabl}" uniform joints, all of which are somewhat 

 longer than wide. There is no opposing spine to the terminal claw. 



Radials concealed as far as the syz3^gy in the axillar}-; axillaries 

 low and wide; distichals 4, the two outer united b}' syz^^gy; rarely 3, 

 the two outer united by syzyg}^; 20 arms 120 mm, long, the first eight 

 brachials oblong, the remainder triangular, somewhat wider than 

 high, becoming cjuadrate at the tips of the arms; a syzygy in the third 

 brachial, another about the fifteenth, and others distally at intervals of 

 from 4 to 7 joints. 



First pinnule on the second distichal, always on the outer side of the 

 rays, 4 mm. long, with about 20 joints, the first three or four broad, 

 with rough dorsal projections, the distal short but slender; the second 

 brachial 1)ears a slender pinnule 11 mm. long with about 40 short joints, 

 the first two with dorsal processes. From the first two brachial pinnules, 



"For Dr. Clemens Hartlaub, in recognition of his work on the unstalked crinoids 

 of the Indian Archipelago. 



