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ON A GYNANDROMORPHOUS SPECIMEN OP 

 ABOPMA THAUMAS,. Hufn. 



By James Edwards, F.E.S. 



Adopjea thaumas, Hufn., £ (X 2*64). 



By the kindness of my friend Mr. H. J. Thouless I have been 

 able to photograph, and through the courtesy of the Editor to 

 publish, the accompanying figure of a gynandromorphous speci- 

 men of Adopcea thaumas, Hufn. It was captured by Mr. Thouless 

 at Drayton, Norfolk, on August 3rd, 1896. 



The genitalia are male, and of the full size ; the only 

 abnormal features (so far as can be ascertained without dis- 

 section) being much flattening and distortion of the apical lobe 

 of the tegumen, and the presence on the left side of a large sup- 

 plementary chitinous lobe which appears to spring from nearly 

 the same point as the clasp. 



Gynandromorphism amongst the Hesperiidae appears to be 

 rare ; I have not met with any recorded instances, nor have I 

 observed any amongst the large number of Hesperiidae which I 

 have had occasion to examine during the last few years. My 

 acquaintance with the literature of the subject is, however, much 

 less than I could wish. 



That the absence of the sex-mark on the left fore wing of the 

 specimen figured is not merely fortuitous may, I think, be safely 

 conceded when the abnormality in the genitalia is taken into 

 consideration. In this connection it may be well to note that 



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