ON THE GENUS CHLOEIA, 175 
Bathychloeia sibogae, n. sp. 
Siboga-Exped.: St. 211, 5° 40’ Lat. S., 120° 45’ Long. E. ; 
depth 1158 M. 
Length of the single specimen 7'/, mm., its greatest 
breadth 8 mm.; number of segments 16. Body elongated 
oval, tapering posteriorly. Bristles pale yellow, opalescent, 
in the posterior segments strongly elongated, dorsally as 
well as ventrally, and surrounding the anal end with a 
hairy envelopment. The caruncle extends backward to the 
third segment and shows 10 to 12 loose, indistinct folds; 
the median tentacle hardly reaches till half its length. 
No eyes are visible. The mouth seems to be limited poste- 
riorly by the 2¢ segment. Branchiae small, except those of 
the first pair which are situated on the 5th segment; these 
are very large and extend over two segments. Bristles much 
resembling those of Chloenea atlantica; those of the ventral 
fascicle very slender, bifurcated, the short limb more resem- 
bling a tooth, whereas the long limb has its inner border 
slightly convex and coarsely serrated. The dorsal bristles 
are thicker, the short limb measures about a fourth of 
the long one; beyond the fork the last one is somewhat 
curved outward and faintly serrated along its inner border. 
In the segments behind the 6th one there occur also other 
bristles, having their outer border furnished with regular 
serrations; another set of bristles appears to be quite smooth. 
The genus Chloenea M’Int. (not Kinberg), though in many 
regards agreeing with Bathychloeia, is sufficiently distin- 
guished by the uniformity of its branchiae and by the 
presence of a branchial cirrus besides the dorsal one on 
each parapodium. 
Leyden Museum, March 1910. 
Notes from the Leyden Museum, Vol. XXXII. 
