NO. II THORACIC MUSCLES OF COCKROACHES CHADWICK 



29 



10 



IIIA 



Figs. 9-12. — 9, Supella supellcciilium (Serv.). female. 10, Cryptocercm punc- 

 tulatus Scud., female. 11, Pycnoscelus stirinawetusis (L.), female. 12, Diploptcra 

 dytiscoides (Serv.), nymph. 



