174 



ZOOLOGY 



SECT. 



regular order, the stomodaeum, and the four gastric ridges with 

 their septal funnels; The Scyphozoon-polype is called a scyphula 

 or scyphistoma. 



FIG. 129. Aurelia aurita, development. A. planula, erroneously represented as completely 

 closed ; B, C, formation of stomodseum ; D, transverse section of young scyphula ; E, 

 scyphula ; F, longitudinal section of same : the section passes through a per-radius on the 

 left of the dotted line, through an inter-radius on the right ; G, division of scyphula 

 into ephyrulse ; H, ephyrula from the side ; L, the same from beneath. In A D and 

 F the ectoderm is unshaded, the endoderm striated, and the mesoglcea dotted, a. lobes 

 of umbrella ; mnb. manubrium ; mth. mouth ; ./. septal funnel ; st. stornodseum ; t. tentacle ; 

 tn, tamioles. (From Korschelt and Heider's Embryology.) 



The scyphula may grow to a height of half an inch, and some- 

 times multiplies by budding. After a time it undergoes a process 



