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Family III. AGERONIDtE. 



Genus AGERONIA Ilubn. 

 Hiibn. Verz. beh. Schmett. 41. (1816). 



Pekidromia, Ajifhiciilora Boisd. Blanch 

 Nympiialis God'. 



Head rather broad. 



Eyes oval, prominent. 



Maxilla 1 long, rather robust. 



Labial Palpi approximating, ascending, double the length of the head ; basal joints short, curved, 

 clothed with scales and at the base with a tuft of hair ; second joint three times the length of 

 the first, cylindric ; third joint about as long as the first, elongate, oval. 



Antenna of moderate length, enlarging near the apex into a very gradually thickening club. 

 Thorax robust. 



Anterior Wings triangular, the anterior margin rounded, the posterior sometimes rounded, some- 

 times emarginate ; the inner margin in the male occasionally dilated. Costal nervure much dilated 

 for the greater part of its length, reaching the costa a little before the middle. Subcostal nervure 

 very slender at its origin, enlarging towards the end of the cell, five-branched, its first nervule 

 thrown off a little before the end of the cell ; the second immediately afterwards, sometimes almost 

 from the same point, the nervure here bent downwards until it joins the upper disco-cellular, 

 then again bent, so as to be directed forwards and slightly upwards ; the third nervule thrown 

 off much nearer to the cell than to the fourth nervule, this last at a point about equally distant, 

 from the cell and the apex ; cell rather short. Upper disco-cellular short, stout ; middle disco- 

 cellular stout, sometimes shorter than, sometimes about equal to, the upper ; lower disco-cellular 

 slender, directed obliquely inwards for more than half its length, then curved and tending 

 outwards, striking the median nervure before the origin of its second nervule. .Median and 

 submedian nervules swollen at their origin. Internal nervure wanting. 



Posterior Wings subtriangular, the margins rounded, the anterior margin sometimes slightly 

 emarginate ; the abdominal fold ample, completely enclosing the abdomen below. Precostal 

 nervule sometimes branched. Discoidal nervure appearing to be a third subcostal nervule. 

 Disco-cellular slender, curved at its termination, united to the third median nervule near its 

 origin. 



Anterior Legs imperfect ; the femur, tibia, and tarsus nearly equal in length, the tibia sometimes 

 shortest in the males ; tarsus of the male clothed with long hairs, subcylindric, rather pointed 



June, 1847. 



