274 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



The 10 arms are 120-265 (usually about 200) mm. long and resemble those of 

 T. afra. They are stout basally but become very slender in the terminal portion. 



Syzygies occur between brachials 3 + 4 and 9 + 10 (or 8 + 9), and distally at in- 

 tervals of from 6 to 10 muscular articulations. 



Pi is 18-30 (averaging 22.6) mm. long, and is composed of 24-42 (usually about 

 30) segments. It is slender, becoming more or less flagellate distaUy. Pz is 21-30 

 (averaging 25.7) mm. long with 30-42 (averaging 33) segments, and is somewhat 

 stouter than P,. P3 is similar to P2, 22-30 (averaging 25) mm. long, with 28-38 

 (averaging 33) segments. The pinnules following resemble these, but slowly de- 

 crease in length to the tenth or eleventh, Pn being about 12 mm. long. The distal 

 pinnules are 12-18 (averaging 16) mm. long, and are composed of 30-45 (averaging 

 36) segments. They are comparatively stout basally but taper rather suddenly, 

 becoming exceedingly slender after about the seventh segment. The second and 

 following pinnules bear long fusiform gonads extending from about the fifth segment 

 to near the tip of the pinnule. The first nine to eleven pinnules lack ambulacral 

 grooves. GisMn noted that the relative size of the proximal pinnules is very variable. 

 Pi, however, is always more slender than those following because of the absence of 

 the gonad. 



The disk is 22-29 (averaging 25) mm. in diameter. The diameter of the animal 

 with the arms closed at the level of the first syzygy is 20-30 (averaging 24.5) mm. 



The color is bright yellow or deep purple. One specimen is recorded as being 

 dark yellow brown, and another as yellow with the cirri and arm bases washed with 

 purple. 



Notes. — One of the specimens from near Kowloon dock, Hong Kong, has the 

 centrodorsal with the dorsal pole slightly convex. The cirri are XXVIII, 32-37, up 

 to 45 mm. in length. Of the three specimens from this locality one is yellow, another 

 is yellow with the cirri and arm bases washed with purple, and the third is entirely 

 deep purple. 



Three of the specimens from West Point, Hong Kong, are very large and stout, 

 but the fourth is smaller. In one the centrodorsal is discoidal with the slightly con- 

 cave dorsal pole 10 mm. in diameter. The cirri are XXXVI, 32-34. In another 

 there is a single cirrus remaining which has 34 segments. 



A specimen labeled simply Hong Kong is very large and stout. The longest 

 cirri are 45 mm. long and are composed of 32-34 segments. The color is yellow. 



The specimen from the Korean Straits has the arms 230 mm. in length. The 

 cirri are XXVIII, 35-41, 40 mm. long. The pinnules are similar to those of specimens 

 from Misaki. P, is 20 mm. long, and P2 is 30 mm. long. P3 is similar to P2. The 

 pinnides following gradually decrease in length. The distal pinnules are 17 mm. long. 

 On some arms Pj is more nearly the length of P2. 



In one of the specimens from Sagami Bay (lat. 37°07' N., long. 139°44' E.) the 

 arms are 210 mm. long, and the animal is 30 mm. m diameter at the level of the first 

 syzygy- The ch-ri are XXXVI, 37-43 (usually about 40), 50 nmi. long. Two of the 

 cirri have the distal portion broken off and regenerated, though the regenerated por- 

 tion has not yet reached the normal stoutness. P, is 23 mm. long with 30-35 seg- 

 ments. P2 is 24 mm. long, rather stouter than Pi, with a similar number of segments. 



