496 



MEMOIRS OF THE UNIVERSITY OF CALIFORNIA 



The pigment mass consists of a black melanosome surrounding and almost hiding a bright 

 red central core and changes outline with the varying positions of the body and with the 

 approach of cytolysis. It varies from flattened to elongate hemispherical form with varying 

 irregularities on its surface, but had no amoeboid, dendritic or reticulate processes when observed. 

 Several detached globules of the pigment lie on either side of the girdle just below the ocellus. 



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Fig. TJU. Erythropsis cornuta (Schiitt). 1. Ventral view with prod fully expanded. 2-4. Stages in 

 sloughing off end of prod. 5. Dorsal view with tentacle partly retracted. Blob below cast off plasma from 

 prod. X 500. 



There is a large sacklike, clear, pinkish pusule extending posteriorly from the anterior 

 flagellar pore on the dextrodorsal side of the ocellus and another smaller pink sack with lobed 

 diverticula, posterior to the ocellus aad adjacent to the distal end of the girdle. The connection 

 of this with the pore by a canal was not noted. The anterior sack was far less pink in color 

 than is usual with the contents of pusules. It seems probable, but not certain, that these two 

 structures are pusules attached respectively to the anterior and. posterior flagellar pores. 



