135 

 POTTS, loc. cit. p. 345, PI. XIX, fig. i8; PI. XXI, figs. 53—55. 



Stat. 114. 0°58'.5 Lat. N., 122° 55' Long. E. Kwandang Bay eiitrance (North-Cclebes). Depth 

 75 M. I incomplete specimen. 



Of this species, first described by Grlhe from the Philippines and afterwards found by 

 PoTTS in the neighbourhood of the Maldives, an anterior fragment is present, consisting only of 

 23 segments and measuring 10 mm. in length. The })rostomium (PI. XXIX, fig. i ) is transversely 

 elongated, about half as long as broad, with its frontal margin faintly emarginated in the middle 

 and provided with two blunt, transparent, lateral corners ; besides a large diffuse black patch 

 on the lateral region of the head there is a pair of conspicuous eye-spots in front of the occi- 

 pital border and another indistinct spot behind each frontal corner. From the middle of the 

 occipital margin of the head, in front of the nuchal fold of the buccal segment, a long cylin- 

 drical tentacle arises, that is dilated beneath its filiform tip ; two short, cylindrical antennae, 

 whose distal half is hliform, are inserted on its frontal margin. The palps are thrice as long 

 as the head, smooth, tapering distally, with a red ring beneath their tip. Behind the mouth 

 the ventral median region is longitiidinally folded till the intersegmental groove iv/v ; in front 

 of the mouth the skin is transversely grooved. The elytra are elliptical, smooth, with their scar 

 of attachment situated eccentrically, next to the external border; only the two anterior ofthem 

 are overlapping each other and cover the head-lobe, whereas the succeeding ones are widely 

 separated from each other and leave the median dorsal region barren. Except the anterior 

 pair all the scales have a black spot behind the middle of the anterior margin and the ven- 

 tral side is also dotted with black in its median region. 



The first segment bears two tentacular cirri, the dorsal being a trifle longer than the 

 ventral one ; it does not contain any bristles. The 2"<i segment possesses setae serrulatae only 

 and is provided with a very long ventral cirrus, extending a good deal beyond the extremity 

 of the foot. In the succeeding segments the ventral cirrus is also well-developed, though it hardly 

 reaches the distal end of the parapodium. The dorsal and ventral lobe of the parapodia are 

 not distinctly separated from each other, though behind the 9"^ segment, the first-named can be 

 recognised by its acicula and its spinning gland. In segment 10 (PI. XXIX, fig. 2) four kinds of 

 bristles could be distinguished : (i) in its central part, stout, yellow uncini, faintly S-like bent, 

 with a blunt, smooth tip (PI. XXIX, fig. 3 rt;) ; (2) in its dorsal part, vitreous, transparent setae, 

 not quite as stout as the preceding ones, with an obtuse tip, beset with spines, from which a 

 whip-shaped, spinous appendage arises (setae aristatae fig. 4^); (3) in its ventral part, 

 rather stout bristles, transparent, with the distal end of the shaft somewhat dilated before 

 terminating with a slender, falcated, spinous tip (setae serrulatae fig. 3<^); (4) in front of 

 the first two groups, slender, straight setae, with few spines in whorls (fig. 4^). 



True pencil-bristles (setae bipennato-penicillatae) as figured by Kinberg (loc. cit. PI. VII, 

 fig. 34 G. and 35G. s") and by Maiaquin and Dehornk (loc. cit. PI. 52, fig. 10) do not occur 

 here, as also stated by Mc Intosh ; the bristles named "pencillate" by Potts, must be ranged 

 in my opinion, among the "setae serrulatae". 



91 



