150 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



IBr 2 (axillaries) are twice as broad as long and rhombic. The arms are about 5 mm. 

 long. The first brachials are twice as long exteriorly as interiorly, three tunes as 

 broad as the exterior length. The second brachials proximally rise into a synarthrial 

 tubercle. P : has 7 segments; P 2 is shorter, with 5 segments; P 3 is about as long as P 2 , 

 with 7 segments; P 4 is sometimes absent. 



Gislen remarks that in his specimens from the Bonin Islands the cirrus segments 

 are a little shorter than in those from the Siboga collection; but cirri can be found with 

 the segments more elongated. 



None of his 7 specimens had a genital gland on P 2 as did the type from Siboga 

 station 50. From other Siboga stations, however, the specimens had the first genital 

 gland on P 3 as was the case with his. He suggests that, as this is evidently not due 

 to age, it may have varietal significance. 



Of the three Snellius specimens noted by the author in 1936, one has the cirri 

 5.5 mm. long, with 10 segments. The dorsal pole of the centrodorsal is papillose. 

 The elements of the division series and the first two brachials have their edges slightly 

 thickened, with occasional tubercles on the edges and on the dorsal surface, and with 

 a few long and widely separated spines on the edges. Pj is 3 mm. long, with 11 seg- 

 ments. In another specimen P! is 7 mm. long, with 10 or 11 segments. On a de- 

 tached arm about 30 mm. long, P b is 5.7 mm. long, with 10 segments, and P c is 4 mm. 

 long with 9 segments and proportionally less stout. On another detached arm about 

 30 mm. long, P b is 5.4 mm. long, with 10 segments and P is 3.8 mm. long, with 8 

 segments. 



Localities. Siboga station 240; Banda (south of Ceram); 9-36 meters; black 

 sand and coral; November 22 to December 1, 1899 [A. H. Clark, 1918] (1, Amsterdam 

 M.). 



Siboga station 289; off eastern Timor (lat. 9 0.3' S., long. 126 24.5' E.); 112 

 meters; mud, sand and shells; January 20, 1900 [A. H. Clark, 1918] (1, Amsterdam 

 M.). 



Siboga station 50; Bay of Badjo, western coast of Flores; reef; April 16-18, 1899 

 [A. H. Clark, 1912, 1918] (42, U.S.N.M., E. 440; Amsterdam M.). Type locality. 



Siboga station 65a; south of Saleyer (south of western Celebes) (lat. 7 00' S., 

 long. 120 34.5' E.); 120-400 meters; pale gray mud changing during the haul to 

 coral; May 6, 1899 [A. H. Clark, 1918] (3, Amsterdam M.). 



Albatross station 5593 ; near Sibuko Bay, Borneo; Mt. Putri, Borneo, (sea tangent) 

 bearing N. 52 W., 17.2 miles distant (lat. 4 02' 40" N., long. 118 11' 20" E.); 69 

 meters; fine sand; September 29, 1909 (1, U.S.N.M., 36017). 



Siboga station 99; anchorage off North Ubian, between Borneo and Zamboanga 

 (lat. 6 7.5' N., long. 120 26' E.); 16-23 meters; lithothamnion; June 28-30, 1899 

 [A. H. Clark, 1918] (1, Amsterdam M.). 



Siboga station 105; Sulu (Jolo) archipelago (lat. 6 08' N., long. 121 19' E.); 275 

 meters; coral; July 4, 1899 [A. H. Clark, 1918] (1, Amsterdam M.). 



Jolo, East Indies; c. 36 meters; lithothamnion; Th. Mortensen, March 17, 1914 

 [MS. record] (1, ? C.M.). 



Kombir, Banda; c. 75-90 meters; sand and stones; June 3, 1922 [MS.] (1). 



Siboga station 125; anchorage off Sawan, Siau Island (between the northeastern 

 end of Celebes and Mindanao); 27 meters; stone and some lithothamnion; July 18-19, 

 1899 [A. H. Clark, 1918] (2, Amsterdam M.). 



