khbL 



I'* * « ^ . 



'^ .^ *> 



Fig. 36. — Calligrapha. A. Longitudinal section through an egg of C. 

 higsbyana four hours after deposition. B. Longitudinal section 

 through an egg of C. higshyana 14 hours after deposition. C. Two 

 germ cells just protruding from posterior end of egg of C. multi- 

 punctata. D. The pole-disc in an egg of C. multipunctata. g.c.d. = 

 pole-disc ; g.n. = germ rmclei fusing ; khbl = keimhautblastem ; p. = 

 posterior end of egg ; p.bl.n. = preblastodermic nuclei ; v.m. = vitel- 

 line membrane ; i;/. = vitellophags ; y.=^yo\k. (114) 



