NO. II THORACIC MUSCLES OF COCKROACHES — CHADWICK 27 



IIIA 



sept. 



Figs. 1-4.— i, Leucophaca madcrae (Fabr.), male. 2, Blatta oricntalis L., 

 male nymph. 3, Neostylopyga rhombifolia (Stoll), male. 4, DIattclla vaga 

 (Heb.), female. 



