mm. hm"; the first segment is very short, the second from one half again to twice as long 



the median diameter, the third from two and one half to three times as long as the median 



diameter, the'fourth and following about four times as long as the median diameter; after the 



hth the segments slowly become shorter so that the antepenultimate is little, if any, longi 

 than broad; the penultimate segment is small, wedge-shaped, aL.ua half the size of the ante- 

 penultimate; the opposing spine is small, subterminal; the longer earlier segments are moderately 

 nstricted centrally, with expanded and slightly overlapping ends; the shorter terminal liave 

 straighter dorsal and ventral profiles so that in lateral view the cirri appear to broaden just at 

 the tip; there may be a slightly marked transition segment at about the eighth. 

 The distal border of the radials is even with the rim of the centrodorsal. 

 The IBr are very short, about tour times as broad as the lateral length, which is about 

 twice the median length; the lateral edges are concave; they are just in apposition basally. 

 but diverge trom each other in the angles of the calyx at an obtuse angle of about 1 20 . 



The ll'.r (axillaries) are slightly broader than long, very widely separated; the 'lateral 



are about as long as those of the ll>r.. concave, diverging outward at approximately a 



right angle to each other; the anterior sides are approximately at right angles to each other, 



nearly straight; the anterior angle is only very slightly and broadly produced; a rounded median 



• rior projection incises the IBr,. 



The arms are all broken; the size appears to be about that of an average Antedon 

 literranea. 



The first brachial is very short, twice as long exteriorly as interiorly, the median length 

 about the same as the internal; the proximal third of the inner borders are united, but the 

 distal two thirds diverge almost in a straight line. 



The second brachial is much larger, irregularly quadrate. 



The structure of the arms is essentially the same as that of Antedon mediterranea. 

 P, is from 13.5 mm. to 16 mui. long, composed of [8 21 segments, moderately slender 

 and tapering evenly from the base to the delicate tip; the ftrst segment is not quite so Ion- 

 as broad. the second dei slightly in diameter distally and is about as long as the proximal 

 diameter, the third is between two and one half and three times as long as broad, and the 

 following are somewhat over three times as long as broad, becoming more elongate distally: 

 the segments have the whole surface ver) finely spinous, and the outer have very finely spinous 

 di^tal ends; the articulations are very slightly swollen. 

 I' is similar to 1',, but is nol quite so long. 



1' i-, 7 mm. long with 14 15 segments, much more slender than 1', but otherwise similar. 

 1' is 5 mm. long with 1 1 segments, slender and weak, all but the two basal segments 

 much « ted. 



1' is 5 mm. long with 10 segments, slender and weak. similar to I\. luit more slender 

 yond the third segment. 



1' is )) mm. long with 1 ; segments, slightly stouter than P, with slightly shorter segments. 

 1' is 7.5 mm. long with 14 segments, similar to 1'. but the component segments are 

 'ntly shorter with more expandi I ends. 



