114 THE CANADIAN ENTOMOLOGIST. 



synoptic table would be in section twenty-three. While the larva is 

 unknown, it is safe to presume that the pupa is not formed in the burrow. 

 There can be no confusion with Ochria sauzalitce, which appears farther 

 southward in California, for though the latter has the ordinary spots 

 white, it is of a different build, and possesses a structural difference 

 whereby generic standing is attained. 



Still another species allied to the foregoing may as well be here 

 treated, since it will in no way lessen confusion in keeping the present 

 status of this species as it now is. The rather wide scope of variation 

 attributed to one of the, Guenee species has proved too extended, with two 

 forms at least receiving recognition under the term rutila. A suspicion 

 of this was reached when better material came to hand, and the breeding 

 of the larvae side by side has dispelled any questions whatever. While 

 the present reference may be lacking in fullness of the entire subject, the 

 incongruity of considering too fully distinct species under one name, now 

 that their position is realized, can no longer be excused. When Guenee 

 described an American species under the name rutila, in 1852, so few 

 others are known that he seeks the European Ochria flavago with which 

 to compare. To one high in authority the following translation of his 

 description is due, and since it might be unavailable to some who would 

 care to give the matter attention, is here copied : 



" Expanse 35 mil. Fore wings entire, of the same yellow as flavago, 

 with the same bands and lines of the same colour. Reniform white, 

 divided into several parts by the ground colour. Orbicular and clavi- 

 form rounded, of a bright white, and between them a small white spot. 

 Hind wings like flavago, but with washings effaced, abdomen whitish; 

 base of antennae white. Illinois, coll. Boisd. and Doubleday. It is 

 perhaps the species which Duponchel says is so near flavago, in the 

 supplement." The type, perhaps by this time not in the best of condi- 

 tion, rests in the British Museum. While there may be little to be 

 gathered from this description on account of the number of American 

 forms so closely related, yet its repeated comparisons with the European 

 flavago are of assistance. That the local species we would differentiate 

 from rutila has little to closely connect it with the exotic fla-nigo is 

 certain, and GueneVs type, as might be expected, is a much lighter insect. 

 Occasion is now taken to expressly record the fact that our species, 

 furthermore, is absolutely distinct from that figured by Mr. Moffat as 

 rutila. Can. Ent., Vol. XXXIII., pi. 2* This latter occurs commonly to 



"This plate was kindly furnished by Mr. Dwight Brainerd, of Montreal.- ',d. C. E. 



