178 



ZOOLOGY 



SECT. 



(rudimentary eye). StenocypJiiift 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. 7. f. gastric filament; 

 you. gonad; i.r. t. Inter-radial tentacle; innb. mannbriuui ; iuth. mouth; j>.r. t. per-i-adial 

 tentjvcle ; st. stomach ; tn. tieniole. (After Haeckel.) 



Fia. 131. liUcernaria. A, oral aspect ; B, from the side. g. foot-gland ; p. /. gastric filaments 

 pan. gonad ; mth. mouth ; t. tentacles ; tn. feenioles. (After Clans.) 



tentacles. The Depastridce have an almost entire margin fringed with 

 tentacles. 



