IIuW JELLY-FISH GROW. 





ona branches, which connect with the marginal 

 Aurelia -pawns late in the summer. 

 'I'h it of the mouth into the water along the 



channelled arms, and in ciliated sac or gastrula 



becomes pear-shaped and attach 



shell-. >■!• -■ i- •■ •■■!-. and then assumes a Eydra form with 

 a twenty-four very lung tentacl< This 



88. Sertularia abietina of Europe. A, natural size; B.im 

 in » the i-rlis containing the 



originally described as a distinct animal under the nar 

 Seyphistonia. In this Scyphistoma stag 

 mains about eighteen months. Toward tli<- end 

 period the body increases in - a 1 divides in! - ' 



shaped disks. These Baucer-like disks Ion 



the upturned edgi . - bud out, and the animal 



sumes the Strobila stag< (Fig. 25) Finally, the dis 

 arate, the upper one becomes detached and dies, but the 



