78 ART. II. — A. IZÜKA : 



The dorsal surface of body, under the elytra is coarsely 

 granulated. The ventral surface of body as well as of the para- 

 podia are dusky, being coated witli fine mud ; and on the sides 

 of parapodia there are found sharp -pointed, conical papillae of 

 pale colour. 



Length of the dorsal pair of tentacular cirri are about twice 

 that of the ventrals. Ventral cirrus, arising from about the 

 middle portion of the ventral border of ventral parapodial ramus,, 

 reaches to the base of the inferior group of ventral setae. 



Habitat : — Namerikawa in Prov. Ettyu. (Collected by Prof. 

 S. Watase, on May 20th, 1904). 



Genus Laettnatoiiice Kinberg. 



Eyes on short peduncles placed near the anterior border of 

 prostomium, dorsum covered with felt. Spines of the elytra- 

 bearing parapodia glochidiate, other parapodia with lateral bundles 

 of stout bristles and a tuft of hair-like bristles. Bristles of the 

 ventral ramus semi-pinnate. Nephridia opening externally by a 

 papilla directed upwards between the parapodia. 



Laetinatonice aphroditoides Mcintosh. 



PL IX, ligs. 11—13. 



1885. Laetmatoiiice aphroditoides, Mcintosh. " Cliallenger " Aimel. 

 p. 51. 



The large specimen from Oshima. in Prov. Izu measures 

 22 mm. in length, 14 mm. in maximum breadth excluding the 

 bristles; and consists of 39 segments, with 16 pairs of elytra. 



Body somev/hat broadly ovoid, and the posterior end is 



