Plate 

 XXXIII. 



1. Front of 4th and 5th abdominal segbients of pupa of Plebeius abgus, 



SHOWING PROJECTION OF M \XILLjE INTO PUPAL INTERIOR THROUGH THE 4-5 



ABDOMINAL INCISION X 60. 



2. Front of 4th and 5th abdominal segments of pupa of Plebeius argus, 



with portion of 5th segment cut away, to show maxillae projecting 



into interior of pupa, through 4-5 abdominal incision x 60. 



Pupal structure of Plebeius argus. 



A Natural History of the British Butterflies, etc., 1909. [To face p. 226.] 



