already pointed out, the swimming: larva is flattenea laterally, 

 h'ust as is the sexually produced larva of Aurelia, and it is 

 probele that these entoderraal pouches have arisen at an earli- 

 er stage, tv/o at a time, in nearly the same way Lhat Goette 

 I (1887) found them to arise in that species. 



We have, then, four tentacles in the plaiies of the septa 

 and four in the intermediate planes, or perradii. 

 1 The four septal muscles have an interradial position. 

 At the peristome they appear as cone-shaped thickenings of the 

 ectoderm dippir^ into the supporting substance of the septa, 

 Fig. 31. From the apex of each cone there is a slender cord 

 of cells that penetrates the supporting membrane of the sep- 

 tum and continues throigh the jelly of the aboral part of the 

 larva to the extremity of the stem, or foot, but it does not 

 appear to have any direct connection with the ectoderm at this 

 point. This aboral portion of the muscles is perhaps at this 

 stage a little more differentiated than tlie rest. 



Neither in the living animal nor in sections can any trace 

 be seen of an oesophagus of the nature described by Goette, and 

 the gastric pouches only reserr.ble those of an Actinian very re- 

 motely. 



34 - 



