2* . 



in the mantle st i 11 



anterior end to th ' Ills. 



it s#lmn,s ^aU . id constant!.) rotates at oat 



ood consist^ &f pteeminentl., of bacteria, so 

 jeart.in not parasitic, tut onlj; a u.ess- 

 a the food oltai j its host. 



^ : ?s are distinguish 



1. i at the anterior and flattened dorso-v^ntrall^ , mouth at 



t rior end i oesophagus tubularjnucleus ronlform . r tili. 

 i. narrowed at loth p r ^nd flattened frori, the sidosiniouth in the 



lior third of the bodj-ituft of tactil^ liistlo? *t tb n<->s+--rior 

 .jno oesc : jcleus elli'soi;: i.v*nerls. 



1. incy strum ir-ytili Quen.sp. 

 I ; .477-479 . i .15-17. 



i ^uennerste-dt 190 \j.4-F> ?1. 1 fi^.1-3. 

 ili i\ent 134 - . vl fi^,.2o-27. 



0,0bo-0 t 07giffl. lon^ and fion 0,02-0 t 023miu.l roa . 

 oil n -o*/ai,enlar-,9d anj rounded at the anterior mi ^raduall^ 

 at the posterior, also roanded end. It is stron^l^ flattened in a 

 v -ntrai ai rection. lae dorsal side is conVe\ t the ventral concave. At 

 sterior end on the ri^ht. margin is found a po rlstoi^o-llKe deepenin^ 

 .hich is d the u.outh openin = , lo^iin^ into a narro.v tubular oesopo 



,us. i -i the lef t,post^rior anj* rl^ht margin of tl ^riston,-- 1 s attach- 

 undulatin^ .j.embrane.havin.^ the fora, of a ba,> . lon^ the ri.i,ht mar^i 

 the bodj i.: >\ ro# of Ion ( ^ral) cilia, ^nd at tho anterior end 

 ;t of cilia, s- rvir^ for orehension. The contractile vacilole is at the 

 i the posterior thi r.1 of the body. The renlform maAronucleus with 

 lerical m.yri.ronucleus beside it is in the anterior naif oi tho bo . 



. ..ill ^tripes of Laaiellibranchiata ( A| >ti lus) i occurs in ^uiope and 

 rica. 



