EEEANTIATE POLYCHAETA OF JAPAN. 163 



amber-coloiircd, cluiracteristic Look (fig. 13). Ventral bristle- 

 tufts consist of bristles same as the above mentioned and of 

 others having falcate end-piece. 



The 30th or more posteriorly placed parapodium still exhibits 

 three prominent ligulae, but are all more slender and more elongate 

 than in more anteriorly placed parapodia ; superior ligula some- 

 what conical in lateral view, while the middle and the inferior 

 a})proacli a lanceolate form. These characters are slightly modified 

 in the 57 th parapodium, in which the superior and inferior 

 ligulae are longer, while the middle is proportionally short. 

 Moreover, there occur two hooks above the superior acicula. 



Paragnathi of j^roboscis : I., 11. absent ; III. an irregular trans- 

 verse series ; lY. in triangular groups, the paragnathi being larger 

 than in III. ; V. absent ; VI. in double transverse rows ; VIL, VIII. 

 in tolerably continuous, curved rows. Maxillae pale brown, with 

 8 teeth below terminal fang. 



Habitat :— Off Kobe, 50 fathoms (" Challenger ") ; Misaki (!) ; 

 Kanagawa in Prov. Musashi. 



Nereis Japonica Izuka. 



PL XVII, figs. 14—16, 18. 



1870. Noi(îis ili versicolor, Mareuzeller. Süd jap. Auuel. I, p. 14. 

 lOOS. ,, j;i,])ouica, I/nk;x. On the Breeding Habit and Develop- 

 ment i)t' N. j'a/ionira, .\iiiK)t. Zool. Jap., Vol. YI, pt. 4, p. 295. 



Lxwiy i;i(lu'i- sti)iit anteriorly, posteriorly gradually tapering; 

 pinkish yellow when alive, with two brownish longitudinal bands 

 oji iiiitcrior segments; in alcoholic specimen, only a light 

 liiowii hu(^ left on the anterior dorsal surface of body; 90 — 120 

 segments. 



