312 Austin Hobakt Clark, 



diameter ; cirrus sockets arranged in a Single regulär closely crowded mar- 

 ginal row. 



Cirri XIX, 28 — 31, 20 mm to 22 mm long; the cirrus Segments are 

 subequal, about twice as broad as long, the basal shorter, the last five or 

 six becoming somewhat longer ; the dorsal surface of the segments is broad 

 and flat; the second has the distal dorsal edge produced and bluntly ser- 

 rate ; on the following this serrate ridge becomes more and more deeply 

 crescentic, ou the fourteenth and following becoming a median straight 

 finely, and rather bluntly, serrate transverse ridge appearing as a minute 

 spine in lateral view ; opposing spine large, the apex subterminal, arising 

 from the entire dorsal surface of the penultimate segment, rising to a 

 height about equal to one-half of the diameter of the penultimate segment ; 

 owing to the closely crowded condition of the cirrus sockets the first three 

 Segments of the cirri are sharply flattened laterally as in related forms. 



The radials are concealed in the median line, but are visible as low 

 triangles in the angles of the calyx; the IBri are very short, about six 

 times as broad as long, the proximal and distal edges parallel to each 

 other, and the lateral edges parallel to the longitudinal axis of the ossicle, 

 not in lateral contact; axillaries very broadly pentagonal, from two to three 

 times as broad as long, the lateral edges about two-thirds as long as those 

 of the IBri, turned slightly outward and therefore making a slight angle 

 with the longitudinal axis ; the lateral corners of the IBr^ and of the IBr 

 axillary are rounded off; there are ten IIBr 4 (3 + 4) series and two IIIBr 

 4(3 4-4) series, both of the latter developed on the same IIBr series; the 

 division series are strongly rounded dorsally without lateral borders, re- 

 sembling those of Heteromeira savignii. 



The twenty-two arms are 85 mm long; the first two brachials are 

 subequal, slightly wedge-shaped, about four times as broad as the median 

 length ; the first is internally united for the proximal two-thirds, beyond 

 this point diverging at a right angle; the first syzygial pair (composed of 

 the third and fourth brachials) oblong, two and one-half times as broad 

 as long; the next four brachials are short, approximately oblong, about 

 four times as broad as long, the following obliquely wedge-shaped, two 

 and one-half times as broad as long, becoming less obliquely wedge-shaped 

 distally. 



Pa always absent; Pd 10 mm to 11 mm long with from twenty-seven 

 to twenty-nine segments of which the first four or five are broader than 

 long and the remainder about as long as broad, slightly longer than broad 

 termiually ; the pinnule is moderate in size, smooth, evenly tapering and 

 very delicate distally; Pj 10 mm long with twenty-two segments, resem- 

 bling Pd but very slightly more slender: P, is 10 mm long with twenty- 



