AMERICAN LEPIDOPTERA. 205 



agree with Lederer except that I consider the Bombyciae and BrepJpidae 

 as Nbctuidae, and am adverse to giving an independent family rank to 

 these small assemblages of genera. I also believe that genera may be 

 founded on comparative characters, and that we should not associate 

 very different-looking insects because technically they agree in certain 

 natural characters. If we can find a modification of these, this will 

 support a genus which otherwise we might not erect. Still I have always 

 relied on natural characters and nowhere have I considered that pattern, 

 color or size are sufficient. Admitting that secondary sexual characters 

 must be used in some lower groups to erect our genera upon, I cannot 

 make an exception with Heliochilus, as I have elsewhere fully ex- 

 plained. 



The four species which have become homeless through Mr. Smith's 

 paper and must be transferred to other subfamily groups, I would arrange 

 as follows : 



XANTHODKS, Guen. 



Buxea, Or. — Texas. 



TRILEUCA, Gr. 



Eyes full, naked, unlashed ; vestiture scaly ; body untufted ; tibiae 

 unarmed •, wings full ; primaries unusually broad for this group ; apices 

 pointed, external margin straight. The colors are faded brownish ochrey, 

 silky, shining; fore wings crossed by three pale, narrow upright lines, 

 the outer angulate on costal region. The species are : 



Tripascia, Gr. — Southern States. 



Gulnare, Streck. — Illinois. 



CHAN4ECLEA, Gr. 



Front with a tubercle ; tibiae apparently unarmed ; body untufted ; 

 wings like Stir in. The genus is not unrelated to Grotella, and in 

 colors oddly resembles the European C. Delphinii. I have figured it in 

 my Illustrated Essay. 



Pernana, Gr. — Arizona. 



Note. — In my revision of the Stiriinae, etc. (Can. Ent.), I record 

 this genus and its characters at length. 



TRANS. AMER. ENT. SOC. X. (67) MAY, 1883. 



