22 



tentacles ; st, the alimentary cavity ; fig. H. IV„ egg, a porus egg under the 

 ectoderm, fructified by the spermatic particles, which are contained in the 

 little vesicles sp ; fig. H. IX., a 200 times magnified lasso-apparatus ; c, a 

 vibrating cluster of smaller cells around a larger one ; w, the lasso-twine ; 

 n, the oval cell, containing formic acid. Pig. H. X. represents the end of a 

 tentacle with several lasso-twines ; pr, the streaming protoplasma with 

 small granules. 



5 — The sign for a male. 



$ — The sign for a female. 



5 — The sign for a hermaphrodite. 



At the wood-cut Cypris, page 11, the dotted points should reach from m to 

 the little ring near the mandibular leg c. 



