THE CANADIAN ENT0M0L0GIS1. 37 



marculenta. Instead there is a vague and broad darker shade only visible 

 with attention. The outer line is rounded outwardly over the median 

 nervules, as in trimaculalis. It is apparently disconnected below vein 3, 

 appearing again higher up below the open reniform and describing an 

 inward curve above vein 1. The orbicular dot is imperceptible and the 

 inner line very faint. Fringes faintly discolorous, being pale fuscous, con- 

 colorous with the lines. Hind wings very pale fuscous with a slight yellow 

 cast. The line is continuous, squarely projected over median nervules, 

 very different from allied forms. A pale terminal line before the pale 

 fuscous fringes. Beneath largely washed with fuscous, legs outwardly 

 white. On primaries the marking of the upper surface reappears relieved 

 by pale interspaceal blotches ; hind wings- pale fuscous, uniform, with the 

 line repeated. Palpi white beneath, dark at the sides. Habitat, Hamil- 

 ton, Ontario, Mr. Moffat. The species seems a little stouter bodied than 

 marculenta, of about the same expanse. 



CORRESPONDENCE. 



SWARMING OF ARCHIPPUS. 



Dear Sir, — 



The assembling of D. archippus referred to in Can. Ent. is perhaps 

 not so frequently noticed as their passing over localities in flocks. Several 

 years ago I saw them congregating in a bit of woods in the neighborhood 

 of the city which I was visiting at the time. At least every other day they 

 were hanging in a listless kind of manner to the underside of branches in 

 immense numbers, with their wings closed, and not noticeable unless dis- 

 turbed, very few being on the wing. Their favorite resting place seemed 

 to be dead pine twigs, which would be drooping with their weight, and in 

 more than one instance I saw one too many light and the twig snap, and 

 send a dozen or more into the air to seek for another perch. In going to 

 and from the woods I have seen several of them at once coming from 

 different directions, high in the air, sailing along in their own easy and 

 graceful way, all converging to the one spot. I did not see them depart. 

 I went one day and could not find one in the woods ; and as there were 

 thousands, perhaps hundreds of thousands of them, it would have been a 

 fine sight to see them go. The following year they were remarkably scarce 

 and it was three years before they were even moderately plenty. 



J. Alston Moffat, Hamilton, Ont 



