NORTH AMERICAN LEPIDOPTERA. 59 



Stirps I, SesI/^, has the primaries long and narrow, tlie seconda- 

 ries short and broad, both rather lengthily fringed. 



Familia A, CorpulenUe has the body rather thick, the wings not 

 very narrow, and contains the single coitus Sphecia, to which <ipi- 

 formis is referred as one of the species. 



Familia B, Graciles, has the body rather thin and the primaries 

 very narrow. It contains five coiti, viz. : 



Paranthreue, with primaries closely scaled, the abdomen unequally 

 ringed with yelhnv. 



MeUttia, with j)rimaries partly, secondaries entirely transparent, 

 the feet with large hairy tufts. 



Bembecla, with both wings transparent, abdomen with fan-like tufts 

 at tip. The connnon iipuUformls is typical. 



Synanthedon, with primaries maculate with red in centre and outer 

 margin. 



Co7iopia, with the abdomen banded with bi'ight red. 



Stirps II, Apyralides, has the wings rather broad and angulate, 

 and also dentate. 



Familia A, Vitrake, has the wings with transparent spots ; the ab- 

 domen smooth. 



It contains two coiti : Thyris, with but a single row of pale spots, 

 abdomen white ringed {T. fenestrma sole species) and Phostria, which 

 has two rows of clouded spots on primaries, the abdomen concolor- 

 ous. 



The third ti'ibe contains the LegiUime, and as it is with this that 

 we have more i^articularly to do, the whole is reproduced, the species 

 only being cited which are either North Amei'ican, or necessary to 

 give an idea of the composition of the coitus. The Verzeichniss has 

 left its mark on the present arrangement of the American species, and 

 Mr. Grote has used most of the terms in some one of his many lists 

 to abandon them for others in subsequent ones. 



LEGITIM.E. 



Palpi thick, obtuse, the anteniuie broadening anteriorly, shoi-tly 

 lamellate, at the tip almost recurved, the body thick, the wings 

 strong. 



Stirps I.- BOMB YLLE. 



The tongue very long, the antennae nearly clavate and pointed at 

 the tip, body tufted. 



