Conxistiny of One Cell 



255 



dition of tliis protist is not merely a stage in the life history of 

 the organism. No oni-nndeate stage occurs and tlie creature is 

 typically onj-.-mi/ed on the binuch ate plan. It should be noted 

 that the two nuclei are alike morphologically and presumably 

 physiologically, so they do not correspond to the macro- and 

 micro-nuclei of some ciliates. The animal may consequently be 



anichiosntu 



itttractjtlat.flT-- 



ant. bale 



c v 



carti. 





. 

 lar. bas.g-r. 



inlracy tpos t la*. 



---arrt.lat.fi. 

 --/ fr.ve-n1-.fi. 



posi.la^.fl 



pos 



fcfl. 



licit UK 9. i.i \uni.v MTKIS (AFTKH Koroin AND c IIKISTIANSKN ). 



ant. chiasma, anterior chiasnia. ant. halo., anterior halo, ant.lat.fl., 

 ant<'rior lateral fla-rellnni. ant.perist., anterior |)eristoine. ;\\., ;\\o- 

 style. can.. Uaryosomc. eary.halo, karyosoinal halo, cent., oentro- 

 sonie. cyt., cytostomr. fr.vent.fl., free ventral flajrelhun. intraeyt.- 

 lat.fi., int racytoplasinic part of the postrro-lateral tla^elluiii. intra- 

 nnc.rlii/,., intranuclear rhi/oplast. lat.has. >!., lateral hasal irranule. 

 post.fi., po.st<'rior f1aclliiiii. |)ost.lat.fl., posterior lateral fla-rellum. 

 post.perist., posterior pcristomc. l.hlcph., left hlephan))laKt. rhi/., 

 rhi/oplast. tri.halo., triaiifrular halo. 

 



justly regarded, as Kofoid and Christiansen remark, as the 

 "simplest (from the standpoint of numbers only) possible multi- 

 nuclear organisms." -'* Special notice should also be taken of the 

 blepharoplasts (I. bleph.). the n.roxlyle (ax.) and the parabasal 

 bodies (])ar. b.) 



Worthy of mention is the fact that this system of organs, 

 called by the authors the ncuroniotor .v//.v/ew, is so well differen- 

 tiated from the rest of the body substance, and so permanent 



