s 



104 



being s (times very small ( /'. truncate, fig. 7), or the (wo arc nearly equal 



[P. diversilineata, fig. 7a); the subcostal venules arc long, subparallel with 

 the costa, and arc arranged much as in Glaucopteryx, the second subcostal 

 arising midway between thefirsi and third; when present, the anterior discal 

 venule is much curved outward, and the posterior venule is Kent at a high 

 angle. Hind legs with the tarsias long as the tibiae. Abdomen very long 

 and slender, ending in a conical tuft, with dorsal and lateral projections. 

 Coloration: cither gray, with numerous zigzag hands, and an apical, light, 

 zigzag streak, shaded with dark beneath, or some shade of black or yellow 

 ochreous, with fine dark lines enclosing squares and triangles. On the hind 

 wings are usually two rudimentary lines. 



The species of this large genus have a style of coloration and facies 

 that enable them to be distinguished from Glaucopteryx on the one hand 

 and Ochyria on the other. From the former genus, it differs in the more 

 decidedly falcate fore wings, the narrower' head, stouter, longer palpi, and 

 mailer, shorter hind wings. From Ochyria, it differs in the antennae always 

 being ciliated, the cilia being short, in the much longer palpi, and in the 

 much more falcate fore wings, while the species are usually much larger. 

 The natural divisions of the species of the United States are indicated in 

 the synopsis of the species. 



Larva, — "Elongated, smooth, slender, stiff (raide), pedunculiform, not 

 attenuated anteriorly; with the head larger than the neck [prothoracic 

 segment], flattened in front, and often bifid at the summit ; living on trees 

 or shrubs." 



Pupa. — "Of various colors, spotted or punctuated.'' — (Guenee.) 



The characters of the larva of our P. diversilineata agree with those 

 quoted above from M. Guenee's work. 



SYNOPSIS OF THE SPECIES. 



Atlantic and Circumboreal, 



A. Species small, with an oblique apical streak, and no cloud 

 beneath : 



Fore wiugs with two lusset-browu bands P. Iruncata. 



Fore wiugs with two yellowish bands P. hersiliata, 



