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appendage near the base of the cirri. The second parapodium shows much resemblance with 

 that of Pol. sibogae ; however the lobes of the distal margin of the neuropodium are less conspi- 

 cuous and only some shallow incisions are visible. It is curious, that in the specimens several 

 stranci'e organisms had fixed themselves at the margin of the foot, and therefore the particulari- 

 ties of its structure could not be distinguished. The third parapodium has a long dorsal cirrus, 

 that extends a good deal beyond the distal margin of the foot ; the ventral cirrus, nearly as long- 

 as the foot, is dilated in its basal part and tapering distally. In this parapodium commence the stout 

 spines (setae aristatae), that are somewhat cylindrical and bear a fascicle of short bristles on 

 each side of the tip, at the base of the arista (PI. XXIX, fig. 7) ; in Pol. sibogac these spines 

 are faintly S-like bent, somewhat dilated at a distance from the distal end and provided with a 

 smooth tip beneath the arista. To begin with the 9"' parapodium the spinning-gland and the setae 

 pseudo-penicillat'ae become visible. In the 12''' and the succeeding segments at the base of the 

 parapodia, at the median side of the ventral cirrus, there occur two or three translucent 

 bullae, like in Pol. australiensis., and the ventral papilla forms a kind of pocket as in that 

 species ; dorsally the branchial papillae are visible. 



3. Polyodontes sp. 



Stat. ->,■]. Sailus Ketjil, Paternoster Islands. Depth 27 M. and less. i specimen. 



At the above-named Station the anterior fragment of a Polyodo}ifcs-?,\)e.a&s was dredged, 

 that in some regards differs too much from the species of this genus, already known, to be 

 identified with one of them. It has a length of 15 mm., and consists of about 30 segments; 

 it is colourless. The prostomium possesses rather long, stout palps, abruptly ending in a short 

 filiform tip and is beset over its whole length with long, filiform papillae, almost as long as 

 the breadth of the palps. In Pol. atro-iiiargiiiatus the palps are also beset with papillae, but 

 these are very short and only in the basal part they become somewhat longer. Moreover the 

 hook-like bristles (setae aristatae) in the neuropodial fascicle do not possess an arista, but have 

 a smooth, blunt tip. The scales have an oval shape, with the scar of attachment lying eccen- 

 trically in the narrow, exterior part ; they show an areolate structure. 



Genus Eupanthalis Mc Intosh '). 

 [Enarclie Ehlers -). 



Two pairs of sessile eyes, no ommatophores. Median antenna (tentacle) inserted in tront 

 of the occipital margin of the prostomium ; lateral antennae arising from its frontal margin. 

 Neither branchial papillae nor true pencil-bristles (setae-bipennato-penicillatae) present. 



I. Eupanthalis nigromaculata (Gr.)'). PI. XXIX, figs. i — 4. 

 Grube, Annulata Semperiana, p. 50, PI. IV, fig. 2. 



1) Transact. Zoolog. Soc. of London, Vol. IX, 1S77, p. 404. 



2) Florida-Annelideii, p. 53. 



3) That the species from Negombo, descvibed and figuved by Willey (loc. cit. p. 255), should be identical with Grubl's /'««///. 

 nigromaculata appears doubtful to me; for it possesses only a single pair of small eyes, situated on the slightly protuberant lateral bor- 

 ders: the palps are densely fimbriate in their anterior half; the anterior elytra are inversely imbricate and do not cover the head. 



90 



