20 



IWEUTETiP.ATE ANIMALS. 



ill many cases into an "ectosarc" and "endosarc." In the endosarc 

 in mnat J'l-otozoa is found the .soUd or hoUow body, known as the 

 "nucleus" (fig. 3, A), and this may have a still smaller body, the 

 "nucleolus," attached to its external surface, or embedded in its 

 interior. The "nucleus" and "nucleolus" have often been sup- 

 posed to h.-ive a reproductive function ; but there appears to be in- 

 sufficient evidence t(]i tins coii| ctuie 



, .4 





ec V en 



:. S.— A, Amn'ha j,ri,lriis, widi tlic 

 (aflM- Lt-My): «, Niifk-ns; r, <:, 

 files; fri, The yriiinil;tr einlcsHli 

 Alg.1 taken in as fn.irl (ullier d 

 Aiao'hii rntliosa, eiilar^'etl r.OO <li;i 



vaciKi'es, hut ij( 

 are iirntrudei-I. 



nneleiis 



]>sen(lii])M(lia jirotrnileil, eiilarj;. il 200 U'.anieters 

 nliiietile vesieh-; i', One ..f tlie larger fc«nl-vaeu- 

 ; ir, Tlie transp.'neiit eel.isare; u. A ci'll of an 

 ■\U .if tlir same Alga are ol>lii|Uely sliailed). 13, 

 nir(er.s (afier Lei.lyX Tl.e Imdy sliows two large 

 niraetile vesiele. Tlie long anil ilelirate pseudolioilia 



In one division of the Prntn-jxi (the fufiixurui) there is a periiia- 

 neiit mouth and a .short gullet, but in all the othei's there are no 

 definite organs connected with the process of digestion. In no Pro- 



