Komt' l'hcnom(.'na ol Hugcnoratinii in liiuiiiodiilus ;uiil rnlatod Forrns. jl.") 



intestiiic does not toucli the posterior ciid of tlie I)()cly wall iio regene- 

 i-cition talces place froiu tliis poiiit. The posterior eiul of the iiitestine 

 which ends free in the coeloni regeiierates until it comes in contact 

 with the posterior and of the body wall after whieh re<i;eneration of 

 the entire body begiis at tliis point. 



8) In Tuhifex when a portion of the intestiue is removed froju 

 the anterior end of an individual at a level posterior to the point at 

 whieh anterior ret>;eneration of the body wall takes place the anterior 

 end of the intestine will not regenerate. 



9) In Lumbricus kereeuleus when a portion of tlie intestine is re- 

 moved from the anterior end, within the region in which a head is 

 formed, so that the intestine does not touch the body wall, the body 

 wall will regenerate a tongue of new tissue in which no alimentary 

 tract is präsent. The presence of an alimentary tract is therefore pro- 

 bably not necessary for the regeneration of the body wall at the an- 

 terior end of Lumbricus kereeuleus. 



10) When the intestine has been removed from tlie posterior end 

 of Limnodrilus and Tuhifex the wound closes in the same manner as 

 it does under normal circumstances but thereiipon the muscle fibrils 

 of the body wall musculature stream out into the coelom and together 

 with peritoneal cells, chlorogogue and connective tissue form a Strand 

 which extends from the posterior end of the body wall to the poste- 

 rior end of the intestine. Somewhat similar Strands appear to be formed 

 at other points whcrever the continuity of the body wall musculature 

 has been broken. 



11) The intestine of Limnodrilus and Tuhifex is regenerated from 

 entoderm alone. 



12) When the intestine regenerates indepcndently of the body 

 wall the intestinal musculature is regenerated from the old intestinal 

 musculature. Under the same conditions the chlorogogue is regene- 

 rated from the old chlorogogue. 



13) A proctodaeum was found to forin according to the methcd 

 described by Abel (02). 



14) An abnormal anal opening found in Tuhifex was probably 

 caused by the entoderm Coming in contact with the body wall. 



15) No ectoderm enters the coelom to form mesoderm. {Tuhifex 

 and Limnodrilus.) 



16) The neoblasts perform no phagocytic function. 



17) At the posterior end of the body the secondary mesoderm 



