166 ENTOMOLOGICAL SOCIETY 



OEcanthus argentinus Sauss. 



Specimens of what I take to be this species were taken at 

 Oracle, Arizona, and also at Hot Springs, by Mr. H. S. Barber. 

 These specimens have a single straight line on the inner side of 

 the first and second segments of the antennae, and the wings are 

 caudate. From the original description and the later treatment 

 of the species by its author in the Biologia Centrali-Americana 

 there appears to be considerable variation in the length of the 

 wings and the markings of the antennas. There is some varia 

 tion in the antennae, of the specimens before me, some having 

 unicolorous antennas with scarcely a mark except the straight 

 dash on the two basal segments, while others have several seg 

 ments beyond the second deeply infuscated and the markings on 

 the first and second segments of variable distinctness. 



