76 WILLIAM G. DIETZ, M. D. 



PKOGON4 gen nov. 



Type Skinnerella. 



Head entirely rough haired. Labial palpi cylindrical, drooping 

 (in the dead insect) and spreading, of moderate length ; second 

 joint clothed with spreading, hairlike scales, in its apical half, leav- 

 ing only the upper edge free and giving it a bushy appearance, 

 third joint nearly as long as the second, roughened beneath towards 

 the apex, latter obtusely jointed. Maxillary palpi plicate. Antenna? 

 of moderate thickness, first joint short, thickened, joints closeset, 

 with verticils of scales, simple, and about two-thirds ( % ) or nearly 

 as long ( V ) as the forewing. Eyes rather large, not prominent 

 and almost entirely concealed from above. Body somewhat robust. 

 Fore wings elongate elliptic, pointed ; 11 veins, 3 absent, 4-5 and 

 6-7 stemmed, 10 remote from anterior angle of cell, 1* shortly 

 furcate. Hindwings syntar-shaped, costa emarginate from two- 

 fifths the wing length ; 8 veins ; 4 and 5 from a common stern, 

 which ai'ises from the apex of the cell, which is closed, 7 evanes- 

 cent towards its origin, 8 short, scarcely two -fifths the wing length, 

 cilia under 2. Hind tibiae rough haired. 



A very distinct genus, not closely related to any other known to 

 me. In appearance the species resemble Opostega. The three 

 species here recognized are closely related ; of small size, white 

 color with brown costal spots, and are distinguished as follows: 



Face black. 



Thorax entirely white skinnerella. 



Thorax with a brown spot each side anteriorly biptllietella. 



Head entirely white floridella. 



P. skinnerella n. sp. — Palpi and face blackish brown, limited above by 

 ;i line drawn across from lower margin of first antennal joint, above this the 

 head is pure white. Antennae fuscous brown, becoming white towards the base, 

 apex a trifle paler. Thorax pure white. Abdomen pale grayish fuscous, with 

 some scattered white hairs, anal brush yellowish white. Forewings white, costa 

 dark chocolate brown for four-fifths its length with three, wave-like dilata- 

 tions, the first at the base, second before the middle, and the third beyond the 

 middle; remainder of surface with scattered brown scales, an aggregation of 

 these form an irregular spot at the beginning of dorsal cilia and another just 

 below the apex, the latter spot seems to consist of two or three short stria? ; apical 

 part of wing thinly overlaid with yellowish red, having a faint golden reflection 

 in certain lights. Cilia yellowish red, with dark brown scattered scales and one 

 or two irregular dividing lines. Hindwings grayish fuscous; cilia yellowish 

 fuscous. Underside of forewings dark fuscous; hindwings paler. Underside of 

 thorax brown ; abdomen yellowish gray, sprinkled with fuscous. Anterior and 



