PLATE 7 
EXPLANATION OF FIGURES 
41 Longitudinal section through an egg of C. herculeanus var. ferrugineus 
one hour old. X 52 (from Tanquary). 
42 Ditto, twenty hours old. X 52 (from Tanquary). 
43 Ditto, slightly older. X 52 (from Tanquary). 
44 Ditto, two days old. X 52 (from Tanquary). 
45 Outlines of oocyte nuclei (dotted in) with their accompanying secondary 
nuclei of C. herculeanus var. pennyslvanica. X 1250. 
548 
