198 s. GOTO. 



ventral side of the uterus. The sinjle ijolk-dnct thus formed then 

 proceeds almost straight backwards and opens into the oviduct 

 where this is continued into the ootyp. Genito-inteslinal canal arising 

 from the oviduct at the middle of its course, and proceeding forwards 

 and towards the right, opens into the intestine. Testes occupying a 

 little less than two-thirds of the whole median portion of the body 

 lying posterior to the ovary, of moderate size, toleraljly numerous. 

 I «6* deferens descriljing numerous convolutions on its way towards the 

 genital atrium. Oesopluujus sending out numerous lateral ijranches. 

 Intestinal trunks with numerous branches hoih. on the inner and outer 

 sides; those of the former, however, mostly very short. With about 

 30 sucliers on one side and only 9 on the other; the largest of these, 

 lying at about the middle of the longer side, measuring O.GOO mm. in 

 breadth, and tlie smallest 0.0 G5 mm. 



Habitat — Gill of Seriola (iiiinqueradiata (Jap. ßuri or Hamachi). 



Locality — Hiroshima (üjina Port), Mitsugahama, and Misaki. 



Date— August 1889 (li. & Mits.); December 1890 (Mis.). 



2. Axine aherrans^ n. sp. 

 (PI. VII, figs. 5 & G.) 

 Bodij about mm, long, flat, lanceolate, curved on one siile, and 

 with a straight, posterior border making acute angles with the lateral 

 borders. Common genital openin/j situated about g the whole length 

 of the body from the anterior end. Genital atrium armed with conical 

 spines. Ocanj situated at the hinder end of the front half of the 

 body, nearly cylindrical, bent on itself in the form of the letter U, and 

 with the open end directed forwards. The ocidact arises from the 

 ovary a little on the right side of the median line; and after proceeding 

 for a short distance forwards, suddenly bends backwards, and after pro- 

 ceeding in the same direction, suddenly bends forwards and is continu- 



