270 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



slender and filiform, except for six or seven comparatively stout tapering proximal 

 segments, and gradually decrease in length. 



The disk is 25 mm. in diameter and is riot incised. 



The color is black with a trace of violet, or dark purple. 



Notes. The preceding description is taken mainly from Hartlaub, with a few 

 additions furnished by the specimen in the United States National Museum labeled 

 "South Pacific." 



In the type specimen the centrodorsal has a slightly concave dorsal pole, and the 

 cirri are XL-L, about 30, 30 mm. long. Hartlaub said that in this specimen the 

 intersyzygial interval is 3 or 4 muscular articulations in the earlier portion of the arms, 

 increasing distally to about 9. In the specimen from the "South Pacific" the inter- 

 syzygial interval is everywhere about 9 muscular articulations. 



In this last specimen the arms are about 200 mm. long, and the cirri are XXXIV; 

 the only six that are complete have 25, 29, 30, 33, 33, and 33 segments. 



The specimen from Bowen in the Copenhagen Museum has the arms 190 mm. 

 long and the cirri XXII, 21-25 (usually 24), 25 mm. long. 



The color in life of the three specimens collected by Dr. Hubert Lyman Clark 

 at Mer, Murray Islands, appeared at first sight black, but proved on close examination 

 hi bright light to be deep purple. One of these specimens is rather small, though 

 typical, with the cirri XXIII, 22-23. 



In the specimen from Siboga station 164 the centrodorsal is thick discoidal with 

 the broad dorsal pole slightly concave, 9 mm. in diameter. The cirri are XXVII, 

 33-35, from 35 to 45 mm. long. The diameter of the animal at the level of the first 

 syzygy is about 27 mm. The color is violet with large blotches of light yellow. 



In the specimen from Port Galera, Mindoro, the cirri are rather long, though 

 slender, with 31 segments. The color (dry) is purple with a very broad median 

 stripe of yellow brown on the division series and arms. 



One of the two specimens from between Fremantle and Geraldton has an arm 

 length of about 220 mm. The centrodorsal is thick discoidal, 10 mm. in diameter 

 basally and 4 mm. high interradially. The cirri are XXIII, 34-35, from 35 to 40 

 mm. long. The other is similar, with the arms 225 mm. long. The color hi life was 

 dark purplish brown. 



Localities. Bowen, Queensland [Hartlaub, 1890, 1891; A. H. Clark, 1907, 1908, 

 1909, 1911, 1912] (1, H. M.). 



Bowen Queensland [A. H. Clark, 1909, 1911, 1912] (1, C. M.). 



South Pacific (probably Queensland) [A. H. Clark, 1908, 1909, 1912] (1, U. S. 

 N. M., 4015). 



Mer, Murray Islands, Torres Strait; extreme margin of southwestern reef, 

 among staghorn corals; H. L. Clark, October 1913 [H. L. Clark, 1921] (3. M. C. Z., 

 520, 567). 



Siboga station 164; between New Guinea and Misool (lat. 142'30" S., long. 

 13047'30" E.); 32 meters; sand, small stones, and shells; August 20, 1899 [A. H. 

 Clark, 1918] (1, Amsterdam Mus.). 



Port Galera, Mindoro, Philippines; Dr. Lawrence E. Griffin (1, M. C. Z., 703). 



Between Fremantle and Geraldton, Western Australia; 110-146 meters; En- 

 deavour [A. H. Clark, 1914] (2, U.S.N.M., 35342; W. A. M.). 



