274 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



The first brachials are twice as broad as their outer length, which is about twice 

 the inner length. The distal border runs inward and downward from the outer angle 

 to the median line of the arm and then curves to run parallel to the proximal bor- 

 der to the inner edge. The second brachials are much larger than the first and are 

 irregularly quadrate. The first syzygial pair (brachials 3+4) is somewhat longer 

 interiorly than exteriorly and is nearly twice as broad as the median length. The 

 next four brachials are slightly wedge-shaped, about three times as broad as their 

 median length. The second syzygial pair is oblong, half again as broad as long. 

 The following brachials are obliquely wedge-shaped, about as long as broad, soon 

 becoming less obliquely wedge-shaped. Syzygies occur at brachials 3+4, 9 + 10, 

 14 + 15, and distally at intervals of three or four muscular articulations. 



PI is 8 mm. long with 31 to 33 segments, remaining about the same width for the 

 first six segments then tapering gradually, the distal portion being excessively slender 

 and hairlike. The first two segments are about as long as broad with their angles 

 only rounded. The third to the sixth or seventh segments are broader than long, 

 with their angles truncated. The following segments increase rather rapidly in length, 

 becoming about twice as long as broad on the thirteenth and four or five times as 

 long as broad terminally. The sixth to ninth segments have a rounded notch in the 

 proximal border, the edges of this notch on either side being slightly swollen. 



P 2 is about 11 mm. long with 20 segments. It is half again as broad basally as 

 PI, and tapers gradually to a very delicate tip. It is thus much stouter than Pj. 

 The first segment is broader than long, the second and third are about as long as 

 broad and those following increase in length becoming about three times as long as 

 broad on the tenth and somewhat longer distally. 



P 3 and P 4 resemble P 2 ; P 3 is of about the same length but very slightly more 

 slender distally. P 4 is slightly shorter and is still more slender distally. 



The color is white with a series of small but conspicuous brown spots along the 

 ventral surface of the arms, usually at about every third pinnule. 



Localities. Challenger station 219; north of the Admiralty Islands (lat. 154'00" 

 S., long. 13649'40" E.); 274 meters; coral mud; March 10, 1875 [P. H. Carpenter, 

 1879, 1888; A. H. Clark, 1913] (1, B.M.). Type locality. 



Albatross station 5221; between Marinduque and Luzon, Philippines; San Andreas 

 Island (W.) bearing S. 27 E., 5.50 miles distant Gat. 1338'15" N., long. 12148'15" 

 E.); 353 meters; bottom temperature 11.56 C.; bottom density 1.02447; green mud; 

 April 24, 1908 [A. H. Clark, 1918] (1, U.S.N.M., 36012). 



Dr. Th. Mortensen's Pacific Expedition, 1914-16; 3 miles SW of Tucuran, 

 Mindanao, Philippines; c. 548 meters; March 10, 1914 (2, C.M.). 



Danish Expedition to the Kei Islands; station 42; 225 meters; bottom, stones; 

 April 26, 1922 (3, C.M.). 



Danish Expedition to the Kei Islands; station 58; 290 meters; May 12, 1922 

 (1, C.M.). 



Geographical range. From the Admiralty, Kei, and Philippine Islands. 



Bathy metrical range. From 225 to 548 meters. 



Thermal range. One record, 11.56 C. 



Remarks [by A.M.C.]. Unfortunately, though Mr. Clark left a description of 

 one of the Kei Islands specimens, he added no comments on the light thrown by 

 these on the interrelationship between T. tenelloides and tenuicirra. It seems to me 



