542 Prof. M'Intosh's Notes from the 



bristles, which pass forward and slightly upward across each 

 other in the preparation. They taper from the base to the 

 hair-like tip, the former, however, showing a slight constric- 

 tion near the skin, and they have very distinct and rather 

 long articulations, the aspect being such as would be caused 

 by a bevelled edge at each articulation. The ventral bristles 

 (PI. XII. a. fig. 7) are not half the length of the dorsal series, 

 but they are considerably stiffer, with narrow segments at 

 the slightly contracted base, and very distinct longer articu- 

 lations beyond these. They taper to an acute point with a 

 faint hook, probably from the mode of preservation. The 

 next six or seven feet have similar bristles both dorsally and 

 ventrally, the former being directed for the most part upward 

 and forward, the latter often outward and slightly backward. 

 The narrower part of the body is especially hirsute from the 

 long papillae and the long bristles. 



The description and figures of Dr. Hansen agree in the 

 main with the foregoing, though there may be some room for 

 doubt. The brownish colour of the ventral bristles is not 

 conspicuous. 



Marenzeller is doubtful whether S. hirsuta is not a variety 

 of S. glauca, and both have four larger and four smaller 

 branchiae. 



Stylarioides normani. 



A form (PI. XII. fig. 3) distinguished by its compara- 

 tively small size, nearly cylindrical body, short papillae 

 somewhat closely covering the dorsum, well-marked feet with 

 papilla? and the ventral bristles of which are only a little 

 shorter and stronger than the dorsal, comes from Station 49, 

 1890. The body is pale yellow, and under a lens its surface 

 appears to be devoid of sand-grains, but very minute particles 

 of sand and debris are seen under the microscope on the 

 surface of both body and papillae. 



The anterior end is slightly tapered, abruptly truncated 

 anteriorly, and the edge papillose. The bristles of the first 

 series are of moderate length, slender, and pass nearly straight 

 forward. The dorsal bristles of the third series also remain 

 of considerable length and pass upward and forward. The 

 ventral are shorter and stronger, and form a fan nearly trans- 

 verse in direction. Behind the foregoing the dorsal bristles 

 do not become shorter, whilst the ventral (PI. XII. a. fig. 8) 

 distinctly increase in length and are directed outward and 

 slightly backward. The transverse articulations of the dorsal 

 bristles are characteristically faint. The clavate papillae of 



