14 Art. 5. — A. Izuka : 



1900. Tomopteris scolopendre! , Apsrein, Die Alciopiden u. Toinopteriden d. Plankton- 

 Expedition, p. 42, Taf. XL, Fig. 18. 

 1908. Tomopteris Apsteini, Bosa, Eaccolte Planctoniche fatte dalla E. X. " Liguria." 

 Vol. I, p. 288. 

 Non Tomopteris scolopendra, Gosse, 1855. 



Body-proper consisting of 12 segments, 9.0 mm. in total 

 length, 1.2 mm. in breadth and 3.8 mm. in same including fins. 

 There is a slender tail-region measuring 11.0 mm. in length. 



First tentacular cirri short; the second about as long as the 

 body. 



Anteriormost 10 segments with fully developed parapodia; 

 the remaining two segments with lateral processes, but without 

 fin-like structures. 



All parapodia, except those of the first two pairs, have each a 

 ventral fin-gland. This is very highly developed, occupying the 

 most part of the fin. 



Habitat: — Misaki. 



Tokyo, April 30th, 1913. 



Published December 18th, 1914. 



