The Tkixoids from Dk. S. Hock's I^a'I'Kditkix 'i'o Japan 1!M4. 12") 



Axillary h = '''2 br. rhoinbical, the proximal angle covering a 

 part of I Br 1. Tiie axillary is broader than I Br I. Br-s 1 inside 

 well separated. Arms X. 20 nim.+, but not. very much longer, 



Pj 10; 4: mm. (a distal, spiny whorl fi'om the G"' pinnulai|. P., 7: 

 2 mm., without genital gland. P^ 7; 2 mm. with a genital gland froni 

 the 3"' — the 5"' segment. P^ l;]; 4 mm. ( P' and 2' segments short, 

 the other ones long). 



Disk 4 mm. Anal funnel long. 



Sp. 2 (St. 47) C. XXWll S-ll: 2-4,.-. mm. (4'" oirral the 

 longest, L = 3 — 4 X br). R — s concealed. Axillary h = -7' 'ir with 

 strongly concave distal margins. Br-s I basally contiguous inside, h of 

 the outer border ','2, of the inner one '4 X br. Arms X, 25 mm. 



P, 7 — 8; 2 mm. (The L of the segments with the exception of 

 the two first and the very last ones 2 — 3 X br). P._, ('»: 1,2 mm. P., S; 

 2,2 mm. with a genital gland, P^ 8; 2,2 mm. Distal |). 14: 4 mm. 



Sp. S (St. 47) C. XXXI 9-10; 2,.^,— 3,5 mm. 



Axillary as in the preceding specimens. Arms broken, [irobal)Iy 

 between 20 and 25 nun. 



Pj 8; 3 mm. (3'' segment L = 2'/2, 4''' one L = 3V2br) P., 5-(); 

 1,2 — 1,0 mm. P.J 7; 2 mm. No pinnules genitally swollen. 



Disk 1,8 mm. Parasitical Myzostomids. 



■S/). 4 (St. 45) C. about XXV on a hemispherical <\i; arranged 

 in two whorls: — 11; 2 — 4,5 mm. The segments very pronouncedly 

 hour-glass-shaped, those before the antepenultimate cirral L = 2 br, 

 antepenultimate segment L= I ',2 br. Cirri from the dorsal whorl with 

 very much longer segments (cf. the figure 111), in this case the ter- 

 minal claw and opposing spine are relatively large. 



I Br 1 h = ' 6 br. Axillary rhombical, h = '/'^ '-"" (lower, and w ith 

 smaller lateral angles than in the preceding specimens). Arms X, 15 

 mm. +. Br-s 1 inside basally contiguous. Syzygies with an interval 

 of 3 oblique articulations. Br-s rather smooth. 



Pj 8; 1,5 mm. P, (); 1 mm. P3 7 — 8; 1,8 mm. with a genital 

 gland. Disk 2,5 mm. Anal cone 1,3 mm. 



Sp. 5 (St. 45) C. + XXV^ 10—11; 2—3 mm. (4'" segment L = + 4 X 

 br). Arms about 15 mm. P, 0; 1 mm. P, 4; 0,5 mm. or lacking. 

 Disk 1 mm. No gonads developed. 



