On the Pelagic Annelids of Japan. 7 



The body is generally colourless, but those segments which 

 bear the side-glands are of a bright green colour. 



No white papilla? are observed on the ventral surface of body, 

 differing in this respect from Vanadis longissima* (Levinsen) 

 (=Vanadis fasciata Apstein), to which species the present form 

 seems to come nearest. 



Habitat: —Misaki. 



Genus Callizona Greeff. 



Prostomium extending anteriorly to a considerable distance 

 beyond eyes. Proboscis without teeth. Parapodium with a 

 cirriform appendage; setœ compound. 



Cattitsona. jiiftoiiica. n. sp. 



PL I, rig. 8. 



Body slender 38 mm. long and 0.5 mm. broad, consisting of 

 about 190 segments followed by a certain number of indistinctly 

 marked ones. 



Prostomium (PL I, fig. 8) greatly prolonged anteriorly beyond 

 the line of eyes. Paired tentacles short and stout, the dorsal pair 

 shorter than the ventral; median tentacle arising from between the 

 eyes, elongate conical, about equal in length to ventral paired 

 tentacles. Eyes reddish-brown, with ventro-lateraily directed clear 

 lens. 



Tentacular cirri 3 pairs, of gradually increasing lengths from 

 the first to the third. 



Parapodium elongate, with a long cirriform appendage at tip; 

 dorsal cirrus relatively large and elongate-cordate in shape; ventral 



* Apstein :— Die Alciopiden u. Tomopteridim d. Plankton-Expedition, 1900, p. 11. 

 Apstein: — Vanadis fasciata, eine neue Aleiopide (Separatabd. avis d. Zool. Jahr- 

 büchern, abt. f. syst. Band V.). 



