THE CANADIAN ENTOMOLOGIST. 71 



Thyatira, formosa which resembles a Leptina and striatella which re- 

 sembles a Heliophila ( Leucania). Behrensia is a Californian type, 

 allied to Habrostola ; and Deva, an eastern and western genus, as closely- 

 allied to Plusia. 



Tribe Heliothini. 



The body is untufted, the abdomen rather short, the eyes (except ia 

 Anaria) naked, sometimes narrowed, the tibiae usually armed, the antennae 

 brush-like. The activity of the species, and several of their characters, 

 suggest a resemblance to the Agrotini ; so that I have thought of them 

 as flower-haunting Agrotidians, whose bright colors are due to their 

 changed habits and the gay tints of their floral homes. How the colors 

 of the larva may come to resemble those of the plant on which it feeds, 

 how the tints of the moth may copy the corolla in which it hides, has been 

 shown by Prof. Kellicott in the case of Rhodophora florida. Several of 

 the European genera are represented in North America by identical or 

 related species. In particular is this the case with the species of Hiibner's 

 genus Heliothis. As might be expected, the flowery western plains afford 

 a large number of species ; while, in Europe, there are some forty species 

 belonging to about thirteen genera, in America we have over no species 

 belonging to about thirty-five genera. The species of Heliothis seem 

 identical with the European ; whether they have been imported with 

 plants (which seems less likely), or are unchanged survivals, I cannot 

 decide. No variety of armiger like var. umbrosus., which is longer, more 

 of a pale olivaceous, and not dirty ochrey like the type, and which I have 

 taken in Southern cotton fields, seems to be known in Europe. My 

 Pyrrhia angulata and P. stilla are, beyond any question, distinct from 

 the European P. umbra. The pink and yellow Rhodophora and Rho- 

 dosea are peculiar to America ; the extraordinary genus Hcliochilus is said 

 to occur likewise in Aisa. The shiny white genera Euleucyptera and 

 Tricopis are peculiarly American. I regard Nydophaeata (Epinyctis) as 

 a Heliothian, notwithstanding certain coincidences, mostly in outline, with 

 the Cuculliini, or again in armature with Cleophana. The European 

 genus Xanthodes appears to belong here, and we seem to have a repre- 

 sentative species in the Texan X. buxca, but I have not been able to com- 

 pare the moths. The white coloured genera Antaplaga, Groteila, 

 Triocnemis, prepare us for the following tribe. Our beautiful western 

 species, T. saporis, has a resemblance to the European Euterpia laudeti. 



