40 



patches, the largest beginning near the costa, immediately in front 

 of reniform, extending to and including sub-reniform. Sub- 

 marginal well defined and nearly continuous, bordered before 

 with dull white and bluish-gray, t. p. line heavy, bluntly toothed, 

 the inferior tooth small, sinus near inner margin black and heavy, 

 t. a. line heavy, reniform outlined in black, sub-reniform pale, 

 wide open, in about one example in four, and closed in others. 



Secondaries red, median band constricted at one third of its 

 length from costa, not reaching abdominal margin, but sometimes 

 supplemented by a small spot. Beneath as in others of the group. 

 Size, that of C. unijiiga or a little larger. 



This is the form alluded to by Mr. Grote in Can. Ent., Mch., 

 1882, as an unnamed variety of unijiiga, which species it closely 

 resembles, differing mainly in the somewhat larger average size, 

 the clearer markings and the less continuous band of secondaries, 

 the toothing of t. p. line is different, the white spaces, reniform 

 and transverse lines clearly defined and without the distinguish- 

 ing squamosity of unijuga and, altogether, the species is a clearer 

 and brighter form than the other. 



I have taken this form in considerable numbers in this 

 vicinity (Cook County, Illinois, and Lake County, Indiana) for a 

 number of years and have gradually come to regard it as distinct 

 from unijuga. Notwithstanding their close superficial resem- 

 blance from the fact that Liicilla occurs invariably a month later 

 than unijuga, with a distinct interval in which neither form is 

 taken, I describe it as a species, as its identity with unijuga can 

 only be settled by breeding. 



Catocala JUNCTURA. Walk. 



This form (as determined by Mr. Butler) occurs here spar- 

 ingly or a variety of unijuga simulating it closely. Examples are 

 taken here not in any way to be distinguished from WalsJiii 

 {junctura) from Kansas, with all manner of intergrades between 

 that and tinijuga and, occasionally, a well defined specimen of 

 the latter, having the peculiar terminal hook on band of second- 

 aries. It seems quite probable that a closer study of these forms 

 will resolve imijuga, Walshii, junctura and, perhaps, Lucilla and 

 other forms into climatic varieties of one species. 



Catocala Ilia. 



Variation Conspicua. — Primaries, brownish-gray ; reniform, 

 large, white; sub-reniform, obsolete, traces of pale brown and 

 bluish-gray in interspaces, a dark patch adjoining reniform ex- 

 teriorly. 



Variation Duplicata. — Primaries, brownish-gray; reniform, 

 large, white ; sub-reniform, pale, connected with t. p. line. Some 

 pale brown and bluish scales in interspaces, dark shade behind 

 reniform. 



Variation Obsoleta. — Primaries brownish-gray; reniform with 

 pale brown centre surrounded by black line, and enclosed in white 



