602 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



the median portion by the proximal projection of the axillary, which reaches a point 

 between a third and a half the distance to the proximal edge. The IBr 2 (axillaries) are 

 longer than broad and are more or less rhombic in shape. The proximal sides are 

 rather strongly concave, and the distal sides are broadly S-shaped, curving inward 

 from the lateral angles and thence gradually outward, becoming almost parallel on the 

 sides of the unusually produced anterior angle, which is broadly truncated. 



There are 10 arms. The first brachials are at least four times as long exteriorly 

 as interiorly. The proximal border is broadly S-shaped, following the curve of the 

 adjoining border of the axillary. The distal border runs inward from the outer antero- 

 lateral angle approximately at right angles to the longitudinal axis of the arm to a 

 point somewhat beyond the midradial line, then curves outward and runs at a very 

 slight angle to the proximal border to the inner anterolateral angle. The second 

 brachials are larger than the first and are irregularly quadrate with their lower angle 

 rather deeply incising the first brachial. The third brachials (the hypozygals of the 

 first syzygial pairs) are low triangular, the inner border being about twice as long as 

 the median length and the outer border being reduced almost or quite to a point. The 

 arms are not preserved beyond the third brachial. 



The width of the animal at the level of the third brachials is about 6.5 mm. 



A second specimen from the same locality resembles the preceding but is very 

 slightly smaller. 



In a third specimen from the same locality the cirri are 10 mm. long, with 27 seg- 

 ments, of which the first is from twice as broad as long to about as long as broad, the 

 second is about as long as broad or slightly longer than broad, the third is about three 

 tunes as long as the median width, the fourth is still longer, and the fifth and sixth 

 are five or six times as long as the median width; those following decrease in length 

 so that the last 12 are only about one third again as long as broad. The elongate 

 earlier segments have expanded ends, the distal end being somewhat produced, espe- 

 cially dorsally, and slightly overlapping the base of the segments following. On the 

 short and more compressed distal segments the production of the distal edge dorsally 

 becomes narrowed and accentuated so that the dorsal profile of the outer portion of 

 the cirri is strongly serrate, whereas the ventral profile is smooth. The opposing spine 

 is triangular, erect, arising from the entire dorsal surface of the penultimate segment, 

 equal to half the width of the segment in height, and much higher than the production 

 of the distal edge of the segments preceding. The terminal claw is small, conical, and 

 scarcely curved. 



PI is 4.4 mm. long, with 17 segments, and is slender and evenly tapering. The first 

 three segments are about as long as broad, and those following slowly increase in length 

 so that the seventh is about twice as long as broad, the tenth is about three times as long 

 as the median width, and the outermost are about four times as long as the median 

 width. From the tenth onward the segments are constricted centrally, and the slightly 

 projecting distal edge is finely spinous dorsally. P 2 is 4.3 mm. long, with 12 segments, 

 of which the first is about as long as broad, the second is about one third again as long as 

 broad, the third is somewhat more than twice as long as broad, and those following are 

 greatly elongated with slightly produced and very finely spinous distal ends. The 

 pinnule is about as stout basally as P! but tapers rather more rapidly, the distal half 

 being very slender though not flagellate. P 3 resembles P 2 and is of about the same 

 length or slightly shorter, with about 10 segments. It is about as stout basally as P 2 



