eg-gs; its shape is oblong oval, tapering nearly equally forward and backward, like in CJiloeia. 

 The body (PI. X, fig. 11) is colourless, only traces of a couple of longitudinal parallel stripes 

 are present over the middle of the ventral side and there is some dark pigment on the anterior 

 side of the cephalic lobe. No eyes are present. The bristles are vitreous, those of the 

 neuropodium projecting much farther outward than those of the notopodium. The branchiae 

 commence on the 6 th segment as a bifurcated filament ; farther backward they become more 

 and more branched and they are strongly developed on the posterior segments. The prostomium 

 (PI. X, fig. 12) is heart-shaped, with a short caruncle consisting of three longitudinal ridges, 

 that do not extend beyond the first segment ; in front of it a small antenna is situated. Of the 

 paired antennae one couple, nearly as long as the unpaired one, is situated on each side of 

 the median dorsal line, whereas the other pair, emerging from the sides of the prostomium, 

 is much longer. The palpar region (PI. X, fig. 13) is strongly developed and consists of two 

 crescent lobes, upon which two arched spots of black pigment are visible. There is an unpaired 

 anal papilla, faintly emarginated. 



The ventral bristle-fascicle is fan-shaped, nearly twice as long as the dorsal one; it 

 contains only bifurcated setae, much resembling those of Eurythoc. The shorter, thick bristles 

 have a long limb, that is rather obtuse and either plain (PI. X, fig. 14) or furnished with 

 one to three denticulations (PI. X, fig. 1 5) and a short limb, like a spine ; moreover there is a 

 great number of much more slender setae (PI. X, fig. 16) with a long limb, coarsely denticulated 

 nearly over its total length and a short limb, like a spur. The spines are not dilated below 

 the tip. The bristles of the notopodial fascicle much agree with the preceding ones, only their 

 number is not so great and among them there are also some harpoon-shaped ones. 



The dorsal cirrus is rather long, almost as long as the dorsal bristles, whereas the 

 ventral one is much shorter; in some of the anterior segments the last organ was bifurcated 

 or doubled. 



Benthoscolex agrees with its deep-sea congeners Chloenca, Bathychloeia and Sangiria in 

 the shape of its body and in the absence of eyes; but it is conspicuously distinguished from them 

 by the structure of the caruncle as well as by the appearance of the bristles, the unpaired 

 anal papilla etc. 



Genus Amphinome Bruguière. 



Body elongate. Caruncle small, usually tongue-shaped. Branchiae ramified, commencing 

 on the 3 d segment. Ventral bristles simple, hook-shaped ; dorsal ones longer, partially harpoon- 

 like, denticulated along two borders, partially elongated, more or less spinose. Anus dorsal, 

 extending over several segments, with an unpaired cirrus. 



1. Amphinome nigro-branchiata n. sp. PI. X, figs. 17 — 20. 



Stat. 213. Pulu Pasi Tanette. Reef. 1 specimen. 



Stat. 313. Saleh-bay, Sumbawa. Reef. 2 specimens, adult and young. 



This Amphinomid is characterized by its squat form, resembling somewhat a thick Cater- 

 pillar, and by its dark coloured gills. The length of the largest specimen is about 60 mm., its 



39 



