The Trixoids from Dr. S. IJock's Kxpkditiox to Japax 1014. <."> 



Example of the dislributioii of Iho distal syzygics (from arm 8, 

 ill llie above-»|iiotoci cxamiilo) . . ;^0 + 15 1 ... 41 + 42 .... 52 + 51^ . . 

 (i.") ~r <)() . . . 78 -f 7!» . . i»0 + !tl . . 101 + 102 . . . I(l!> i 110 . . Distal seg- 

 ments discoiiial. sliorl. L = ' -2 — ' .i br. Lateral profile I'ather smooth. 

 17 — 18 segments per em. (1(1. if the syzygial pairs are eoimted as units). 

 The arms are \-ei-y elose to one anolliei' (interspaces eliiefly between 

 I Br 2 — Bi' 4 on the outer side of the di\isions). 



P, (!)— )1S_21: (4 )ll mm. (the 4"' and the following segments 

 slender, L = I ' 2 —2 br. like the segments of following jdnnules smooth). 

 P., 10 — 2."): 11 — IS nun.. P., 17 — 20; 14 -1() mm. (in a single case only 

 S; 4 mm., is a young regenerate), 1'^ 14— 10; 10 — 13 mm., Pj, 14; 0,5 

 mm. Distal p. — 20; S.r, — iO.s nmi. (The L of the segments = 2 X br). 



Disk sti-ongly incised, smallest diameter T), largest 7 mm. Tlie 

 s(d'l ]>ai-ts (1(1 not eo\-er the whole venfi-al surface of the di\ision-series. 

 Colour: \i()lct with lighter and darker transverse l)ands on the arms. 



S/i. 1^ (St. 47) C. XXIH (11^)14-17; (3,5— )5,5— 7 mm. 5"' -7"' 

 segments longest, L= 1' 2 br. No dorsal spines; the segments are. 

 however, laterally compressed, forming a vcvy weak eai-ina. Opposing 

 spine: h = ' a — '4 of the hi' (»f the segment. 



\l — s as before. I Pr 1 h = ^ :i br, with slight, lateral prominen- 

 ces. I iJi'ax h = ^ 4 br. almost (i-angular by the backward directed 

 median synarthrial tultercle. y\rms X. 27 mm. Br 1 united inside, \2 

 as wide outside with a- convex outer mai'gin (= an indistinct lateral 

 ]ii(iminence(. P' syzygy between Br 3 and 4 distally with an interval 

 of r» — 7 (dili(|Ue articulations. The Br-segmenis smooth 



P, 13 — \'k 4.:. - .").:, mm. (Longest segments: L = 2V/2 br). P, 13; 

 5 nun. (Segments to 3 X hi-), P, 10; 3 mm., P^ 0; 2 to 3 mm. Then lon- 

 ger p-s again. Distal p. IT); 4,.-i nun 



Disk incised 2.:. — 4 mm., whitish. Otherwise the animal is red- 

 l)i-(»\\ii. 



The specimen described last might perhaps, because of the 

 slidi't )i'' piniuda. 1)0 a young of Lr(ii//»'oiin'lrii jiroledns. It is, howe\'er, 

 to lie iKiticed that it is not until a rathei- ad\anced stage that the 

 young forms oiitain the relation between the lengths of the proximal 

 liiiinnles which is peculiar l(» the full-grow 11 species. ]''or P, is first 

 formed, then P.,. and linally P.,,. The aiMi\'e-mention(Kl shortness of 

 P., mi<!;hl theielorc l)e ascribed t(» the voulh of the animal. 



