178 



ZOOLOGY 



(rudimentary eye), filenocyphits is an allied form which probably is able to 

 move by creeping (looping) movements like those of a leech. Capria has no 



i.r. 



Fig. 130.— Tessera princeps. A, external view; B, vertical section, g. f. gastric filament; 

 gon. gonad ; i.r. t. inter-radial tentacle ; rnnb. manubrium ; mth. mouth ; p.r. t. per-radial 

 tentacle ; it. stomach ; tn. tremolo. (After Haeckel.) 



Fio 131.— Iiucernaria. A, oral aspect ; B, from the side, g. foot-gland ; g. f. gastric filaments 

 gon. gonad ; mth. mouth ; t. tentacles ; tn. tamioles. (After Clans.) 



tentacles. The Depastridm, have an almost entire margin fringed with 

 tentacles. 



