LEPIDOPTEEA. 



Division 2. HETEROCERA. 



Group 1. GEOMETBINA. 



Family 3. ACIDALIID-ffi. 



Geuus ;i. ACIDALIA. 



Antenna of the male bristly, oftea notched or saw-like ; 

 head smooth ; thorax and abdomen also smooth, slendei', 

 often very weak ; wings glossy and silky, of thin textiuv ; 

 fore wings somewhat trigonate, moderately liroad ; hinJ 

 wings rounded. The hinder i)air of legs shortened in various 

 degrees, in many s]iecies; sometimes strongly tufted with 

 long hair-like scales. 



L.\KV.E moderately long and slender, in many species very 

 so, slightly thickened behind ; head retracted and tucked in ; 

 bodies often curiously coiled when at rest. 



Prr^ usually subterranean. 



We have twenty-four species, some of them very closely 

 allied, and not very easy to tabulate, but an attempt may be 

 serviceable : 



A. Wings all purple or purplf-brown. A. rv.hriai/". 



A'-. Wings fulvous or ])ale tawny. 



VOL. VIII. A 



