FIG. 45. Copidosoma (Litomastix) truncatellus . A. Oocyte showing 

 germinal vesicle (g.v) containing a chromatin-nucleolus (c.n) and a 

 plasmosome (p). B. Egg a few minutes after deposition showing 

 first maturation spindle (m.s) and "Nucleolo" (N). C. Egg about 

 one hour after deposition, showing three polar bodies (p.b), the 

 first cleavage nucleus and the "Nucleolo." D. Egg in two-cell 

 stage, about one and one-half hours old. p.n = polar nucleus. 

 E. Four-cell stage. F. Egg about four and one-half hours old 

 showing two polar nuclei dividing, two embryonic cells containing 

 nucleolar substance, and six embryonic cells (dividing) without 

 nucleolar substance. (From Silvestri, 1906.) (147) 



