AMERICAN NETIROPTERA. 37 



l>0!<i<*ri|»tioii of now l».SOC;il>.K in the collection of the 

 American Fntoiiiological Society. 



HV S. FRANK AARON. 



'The following species, with two exceptions, were collected by myself 

 the past Suuuner, in or near Philadelphia. They have been described 

 with the aid of a microscope of 50 diameters, and some of the charac- 

 teristics nientiiincd can not be clearly seen with an ordinary lens. 



Atropos (livinatoria, new var. brunea.— Pale brown all over, darkest 

 on the head and apex of the abdomen, and with a black spot or rounded blotch 

 before the apex ; otherwise like the pale forms, though a trifle smaller. 



I found a single specimen running about in a box of insects, with some 

 others of the pale forms. 



Atropos purpnrea n. sp. Plate IX, fig. 1.— Size and general contour as 

 in A. divhiatorin, the nasus larger and more distinct, as in Clothilla. Color deep 

 reddish approaching purple, brightest on the thorax and dorsum of abdomen, be- 

 coming reddish-gray toward the sides of abdomen, and pale red on the head, 

 deepest on nasus. Eyes very small, black. Antennae slender, pale, 1 7 (?) joints, 

 the two basal ones larger, pale reddish. Palpi 5 joints, pale, the basal joint red. 

 First segment of thorax narrow, second broader and three times as long, elliptical, 

 with a small oblong black spot, anteriorly in the middle. Abdomen broader than 

 head, obovate, broadest and evenly rounded at apex ; sides nearly straight. On 

 the dorsum of abdomen, from the base of the second to the apex of the fifth seg- 

 ment, a deep black line, spindle shaped, though somewhat irregular, broadest on 

 the third segment; just before the apex, another spot, rounded, deep black. Legs 

 pale reddish, semi-transparent, the femora broadly dilated. Length about 1 millim. 



From one example, found running about some old papers, in August. 



I was instantly attracted by the color. 



DORYPTERYX new genus. 



Head long, nasus prominent, jaws strong, eyes situated as in ClothiUa. 

 No ocelli. Meso and metathorax separated. Abdomen ovate. Femora 

 hmg and slender^ about twice as thick as tibiae. Tibiae longer than femora, 

 the posterior pair very long ; tarni three joints^ the basal joint half as 

 long as tibiae, the others equal, short. Wuiga ftvo, lanceolate, veined, 

 the basal half nearly twice as wide as the apical half, coming to a round- 

 ed point at the apex. A'^eins two, springing from one short heavy vein 

 at the base, the upper one parallel with and joining the anterior margin 

 at about half or two-thirds the length of the wing, the other nearly 

 parallel with the posterior margin, and joining it near the apex. 



This g-onus is probably most closely allied to Ps^oquilla, Hagen, but is 

 widely diffcriMit I'mm it in the shape and neuration of the wings, the 

 slender fciiKira and long tibijie. 



(10) 



