8 Art. 5. — A. Izuka : 



cirrus smaller and narrower than the dorsal, its tip about reaching 

 to base of the cirriform appendage. 



Anteriorly placed parapodium with 2 stout acicula in addition 

 to a tuft of long compound setse; but from middle parts of body 

 posteriorly each parapodium with only one aciculum. 



Side-glands reddish-brown, distinctly observable from first 

 parapodiated segment posteriorly. 



Anal cirri absent. 



Proboscis (PL I, fig. 8) short and thick, the anterior border 

 papillated in the protruded condition. 



Habitat: — Misaki. 



Genus Rhynchonerella A. Costa. 



Prostomium prolonged anteriorly beyond eyes. Proboscis 

 without teeth. Parapodium without cirriform appendage; setae 

 compound. 



RhynehonerellfM fulgena Greeff. 



PI. I, figs, 11-12. 



1885. Rhynchonerella fulgent), Greeff, lieber die pelagiscke Fauna an den Küsten der 



Guinea-Inseln. Zeit. f. Wiss. Zool., Bd. 42, p. 450 ; Tai. 

 XIII, Fig. 27. 



1886. I.hijnchonerella capitata, Viguier, Etudes sur les animaux inférieurs de la baie 



d'Alger. Arch. Zool. Exper. 2 série, torn. 4, p. 408, PI. 

 XXV, figs. 1, 2. 

 1900. Rhynochmurella fulgens, Apstein, Die Alciopiden u. Touiopteriden der Plankton- 

 Expedition, p. 15. 



The slender body, consisting of 85-90 segments, measures 

 about 20 mm. in length and 0. 5 mm. in breadth. It is colourless 

 except the light brownish prostomium and the brownish spots and 

 streaks on body-segments. 



Prostomium with two large eyes (PI. I, fig. 11), twice as 

 broad as the next following segment. The eyes brownish-red, 

 provided with antero-laterally directed lens. The two pairs of 



