474 On Ike Organs of Hearing in Insects, 



22 



«, auricula, natural size ; b, magnified ; l,loba; 1°, scapus; 2, torulus; 

 3, antescapus; 4, cyanthis; 5 to 11, phonascus; c, one of the articulations 

 snowing the insertion ; rf, the two elevated stops ; e, the bristle on the sca- 

 pus ; /, the apex, showing the orifice : g, the scapus opened ; A, the loba, 

 side view; i, the same at the hack; k, to the front; /, from the inner side; 

 m, the operculum ; n, the tympanum. 



