PLATE II. . 



A COCKROACH (Ptri/>l,itteta oritHtntis). 

 (From Roll' 



antenna; ; it. fa, 3, tibia; ; c, anal cerci ; d. ganglion <>i 

 duc ' bladder; /. Rin.ir.l : h. hepatic cceca ; 



vek: A. mall intetme; /, large intes; urn; . 



'tit nerve upon tlv 



stomach ; 

 first abdominal ganglion; *, ovary 



