MODEL OF AULOCEROS ELEGANS HACKEL 



View to show internal anatomy. 



phoBodium — dark green in this species), which surrounds and apparently 

 issues from the upper opening of the capsule. It is probably of con- 

 siderable physiological value to the organism and may be either asso- 

 ciated with nutrition or a product of an excretory nature retained within 

 the body for some secondary reason. The real explanation of its func- 

 tion, however, is still vmcertain. 



The true protoplasmic living-substance outside the capsule is dis- 

 tributed for the most part in the form of a network, which secretes and 

 is imbedded in a jelly-like structureless matrix. This matrix is crowded 

 with bubble-like, liquid-filled hollows {alveoles), which are so numerous 

 that they reduce the animal substance to very narrow limits and give 

 a foam-like appearance to this part of the structure. (In the glass 



105 



