230 Clark — New Genera and Species of Crinoith. 



fourth and fifth the longest, about half again as long as broad; following 

 joints decreasing gradually in length to the third from the end which is 

 about one-third longer than broad, the last two being about half again as 

 long as broad; opposing spine represented by a very small terminally 

 situated tubercle, which may, however, be quite absent; fourth and fifth 

 joints very slightly "dice-box shaped," but the remainder with almost 

 straight edges; there is no indication of any dorsal spines. Up to about 

 the sixth joint the cirri are rounded in cross section; from that point 

 onward they are somewhat compressed, and appear somewhat broader in 

 lateral view. 



Radials even with the edge of the centro-dorsal ; first costals very short, 

 about five times as broad as long in the median line, narrowing rapidly 

 anteriorly, not in apposition basally; costal axillaries triangular, about 

 one and one-half times as broad as long, as broad basally as the distal end 

 of the radials, and consequently overhanging on each side the narrow 

 anterior end of the first costals. Ten arms probably about 120mm. long; 

 first brachial very obliquely wedge-shaped or almost triangular, much 

 longer exteriorly than interiorly, interiorly just in apposition basally, the 

 free interior edges diverging practically in a straight line; second brach- 

 ial irregularly quadrate, about as long as the outer edge of the first; first 

 two brachials and second costal with a somewhat produced and thickened 

 border; synarthrial articulation between the first two brachials and the 

 costals rising to a moderate tubercle; third and fourth brachials (syzygial 

 pair) about half again as long interiorly as exteriorly, and about one and 

 one-half times the greater length in width; next four brachials oblong, 

 about twice as broad as long, then becoming wedge-shaped, and after the 

 second syzygy triangular, about twice as broad as long, later becoming 

 wedge-shaped again and somewhat longer ; distal portion of arms lacking ; 

 syzygies occur between the third and fourth, ninth and tenth, and four- 

 teenth and fifteenth to sixteenth and seventeenth brachials, and distally 

 at intervals of three to seven (usually three) oblique muscular articulations. 

 The distal ends of the brachials after the first syzygy are rather prominent. 



P x 25mm. long, moderately thick at the base but gradually tapering and 

 in the distal half very slender and flagellate, composed of forty joints, the 

 first about as long as broad, then gradually increasing in length, the tenth 

 and following being about half again as long as broad; first live joints 

 slightly constricted centrally; I\ 16mm. long, similar to the first, but not 

 so stout basally, with about thirty-five joints; P s 10mm. or 12mm. long, 

 about as stout basally as the second, but less slender and flagellate distally, 

 tapering more evenly from the base to the tip, with twenty joints, re- 

 sembling those of the first and second; it hears a long genital gland; P 4 

 and following pinnules similar; the genital gland disappears about P 121 

 after which the pinnules are about L5mm. long, exceedingly slender, with 

 about thirty-five joints, the first short and crescentic, the second irregu- 

 larly quadrate, about as long as its distal diameter, the third squarish, 

 the remainder gradually increasing in length, being about twice as long as 

 broad in the distal hall'. 



Color (in spirits). — Brownish yellow. 



