The Ceinoids feom Dr. S. Bock's Expedition to Japan 1914. 137 



3'' and 4'" segments the longest ones, L = 2—2 1/2 br, like the pre- 

 ceding ones a little hour-glass-shaped. Antepenultimate segment L= */2 

 br. Opposing spine h = 1/2 of the br of the segment. Terminal claw 

 narrow, pointed, somewhat curved, as long as the penultimate segment. 



R-s h = 'J7 br. I Br— s 1 h = 1/3— 1/5 br, laterally free. "but in 

 close contact by a small, lateral tubercle, at the middle partly hidden 

 by the synarthrial tubercle from the axillary. Axillary rhombic, h = br. 

 The lateral angles a little pointed by a small prominence. Arms X, 

 broken, probably between 20 and 30 mm. Br — s 1 united on the 

 inside, twice as broad on the outside, medio-laterally narrower by the 

 tubercle from Br 2. Ex. of syzygies: 3 + 4, 9+10, 14+15 etc. with 

 an interval of 3 oblique articulations. First 10 segments about dis- 

 coidal, then oblique joints. Arms rather smooth. 



Pj 8; 2 mm. (P* segment short, 2'' one cubical, 3'' L= 1 V/2 br, 

 4th_7th segment L = 2— 3 X br), P- 7; 1,5 mm., P^ 8; 2,5 mm., P3 10; 

 4 mm. (The segments somewhat hour-glass-shaped, L=3— 4br), P^ 7; 

 2 mm., P5 + 9; 3 mm. Distal p— s about 15; 5 mm. (Longest seg- 

 ments L = 3 — 3 '2 br). 



Disk 3 mm., rather much incised, granulated both IR and inter- 

 braehially. Colour: brown. — With some large Myzostomas. 



Bp. 2 (St. 47) Cd rounded, dome-shaped, dorsally papillated. 

 C. + XXV, 11 — 14; 2,5—7 mm. in 2 or 3 whorls, 3'' — 6"' segments the 

 longest, L= 1 ',2, 2 and 2V2 X br. Opposing spine h-^^ig ^f j-j^g j^j. 

 of the segment, directed obliquely outwards. 



Axillary rhombic, h = 2/3 br, with a low synarthrial tubercle, 

 located somewhat in front of the tongue-like posterior prominence (the 

 same in sp. 1). Arms X, 35 mm. Syzygies as before. 



Pi 9; 2,7 mm. (The L of the segments 3—3 1/2 br), P„ 7; 2 mm., 

 P2 10; 3,5 mm., P3 J 4; 5.5 mm.. P^ 9; 2,5 mm. Distal p. 16; 5 mm. 

 (Longest segments L = + i X hr). The genital glands not very pro- 

 minent. 



Disk smooth, somewhat incised, without granules. Colour: brown. 

 — With Myzostomas. 



Properly speaking, the above-described specimens only differ from 

 D. pa7"vicirra (P. H. Carp.) by their smaller proportions. Therefore I 

 have not separated them as a special variety, though the axillaries 



Xriva Acta Reg. Snr. Se. Up.s., Ser. 4. Vol. 5. N:o 0. Impr. ^Va 1922. 18 



