174 



ZOOLOGY 



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

 their septal funnels. The Scyphozoon-polype is called a scy-phula 

 or scy2^histom a. 



Fig. 129.— Aurelia auritai development. A, planula, ei-roiieously repreaentcd as completely 

 cluaed ; B, C, formation of atomodteum ; 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 

 i?ito ephyrulsft ; II, ejjhyrula from the side ; L, the same from beneath. In A — D and 

 F the ectoderm ia unshaded, the cndoderm striated, and the mesoglcea dotted, a, lobes 

 of umbrella ; mnb. manubrium ; mth, mouth ; s.f, septal funnel ; st. stomodEeum ; (. tentacle ; 

 tn. ta^niolea. (From Korschelt and Heider'a 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 



