4 Art. 5.— A. Izuka : 



1868. Liocapa vertebralis, Ehlers, Die Borstenwurmer, p. 181. 

 1876. Asterope Candida, Greeff, Untersuchungen über die Alciopiden, p. 62. 

 1886. Liocapa Candida, Levinsen, Spolia Atlantica, p. 333. 



1892. Alciopa vittata, Hering, Zur Kenntniss der Alciopiden von Messina, p. 747. 

 1900. Asterope Candida, Apstein, Die Alciopiden n. Tomopteriden der Plankton- 

 Expedition, p. 7. 



Boby very long, slender, transparent, consisting of about 270 

 segments, measuring 185 mm. in total length, 2 mm. broad at 

 about the 30th segment, in which parts segments are about half as 

 long as broad. 



Prostomium small. Eyes two in number, very large, each 

 provided with a large lens; they are almost lateral in position and 

 are laterally and slightly dorsally directed; distance between the 

 eyes in dorsal aspect of prostomium shorter than their diameter. 

 Tentacles in two pairs, extending only a little beyond anterior 

 border of eyes; the median tentacle conical in shape, with broad 

 base, much shorter than paired tentacles. 



Tentacular cirri in 3 pairs, those of the anteriormost pair 

 about twice as long as any of the other pairs. 



Dorsal cirri of two anteriormost parapodium pairs bladder- 

 shaped in female, normally shaped in male. 



Typical parapodium elongate conical, provided with an 

 aciculum extending a little beyond tip of parapodium and with a 

 tuft of compound setse (PI. I, fig. 10); dorsal cirrus broad and 

 leaf-like extending beyond tip of parapodium ; ventral cirrus also 

 leaf-like but smaller than the dorsal, nearly reaching to parapodium 

 tip. 



Side-glancls very well developed, being present from the first 

 parapodiated segment posteriorly almost to anal segment, at the 

 same time gradually diminishing in size. They are of a deep- 

 reddish brown colour in the living state, but the colour fades away 

 nearly entirely when preserved in alcohol. 



In the anteriormost 10 or 15 segments, the deep-reddish brown 

 of the side-glands extends mesiad on the dorsal surface and meets 

 in the median line, thus forming a transverse pigmented band in 

 each segment. 



Anal segment with a pair of long anal cirri. 



