NO. 1798. CRINOIDS COLLECTED BY THE ALBATROSS— CLARK. 535 



third the lateral diameter of the penultimate segment; second and 

 third segment with considerably expanded ends; fourth with the 

 distal end much expanded, this character gradually dying away dis- 

 tally; terminal claw nearly twice as long as the penultimate segment, 

 rather slender, and moderately curved. 



Radials concealed; IBr^ very short, oblong, about four times as 

 broad as long, in apposition laterally; IBr2 nearly triangular, twice as 

 broad as long, with a shallow groove on the dorsal side at the anterior 

 angle as in Comatula pectinata. 



Ten arms about 60 mm. long; first brachial wedge shaped, about 

 three times as broad as long exteriorly, basally united interiorly; 

 second brachial more obliquely wedge shaped, about twice as broad 

 as long exteriorly; third and fourth brachials (syzygial pair) nearly 

 twice as broad as long; next two nearly oblong, about twice as broad 

 as long, the following becoming very obliquely wedge shaped, nearly 

 triangular and nearly as long as broad, and further out less obliquely 

 wedge shaped, as long as broad, and longer than broad terminally. 

 The IBr series and first two brachials have everted and spinous distal 

 ends; the following brachials have strongly produced and overlapping 

 coarsely spinous distal ends. Syzygies occur between the third and 

 fourth brachials, again between the tenth and eleventh to thirteenth 

 and fourteenth (usually in the latter position) and distally at intervals 

 of three oblique muscular articulations. 



P^ 7 mm. long with about twenty-five segments, all about as long 

 as broad ; their dorsal surface is excessively spinous, and frills of long 

 spines fringe their distal edges; the terminal comb consists of seven 

 or eight small and well-separated teeth, which are repeated, some- 

 what smaller, on the inner side of the pinnule; P3 4 mm. long, with 

 sixteen to twenty segments, similar to Pj; Pg somewhat larger, 

 5 mm. long, with eighteen to twenty segments, the third-seventh or 

 third-eighth with a genital gland, and a terminal comb; P^ and follow- 

 ing pinnules 4 mm. long, somewhat stouter than P3, without terminal 

 combs, composed of about twelve very spiny segments; the distal 

 pinnules are very slender, about 5 mm. long. 



The color is greenish. 



Type.— C&t. No. 27488, U.S.N.M., from station 5356. 



Genus COMANTHUS. 



Subgenus COMANTHERIA. 



COMANTHUS (COMANTHERIA) BRIAREUS (Bell). 



Station 5321 . — One specimen. 



Mahinog, Caunguin Island. — One specimen with about sixty-five 

 arms. 



