26 o Bulletin of Laboratories of Denison University [Voi. xi. 
testaceous, wings yellowish with the veins a little darker, legs 
usually slightly darker than the abdomen, all of the tibiae 
black at apex. 
Male appendages, as seen from above, reaching the ex- 
treme apex of abdomen, oblong, spreading, about the same 
width for their entire length, rounded, and slightly darker at 
the tips. 
The female is not easily separated from that of stigmateriis, 
but the wings are narrower and usually darker colored. These 
characters are readily seen by comparing a series of the two 
species. 
Habitat, Del.; D. C.; 111 .; Ind.; Penn.; Can.; Md. 
I have examined fifteen males and females of this species. 
The narrow wings and uniform testaceous color are character- 
istic ; the dark anterior and middle legs in fully matured speci- 
mens, is also peculiar to the species. This form has the pecu- 
liarity of appearing at lights. In correspondence with A. W. 
Butler of Brookeville, Ind., I received the following note which 
I insert with his permission : “ About eight o’clock in the even- 
ing of Aug. 28, 1896, as I was passing one of the hotels of our 
city, I was called in to see some queer insects catch flies. I 
observed that they were very successful in their work, furnish- 
ing amusement for the hotel guests and others for a long time. ” 
Hugo Kahl of Lawrence, Kansas, informs me that he took 
three specimens in his room on the evening of Sept. 25th, 1895. 
F. C. Pratt, of the Div. Ent. at Washington, D. C., pro- 
cured the species at light at Travilah, Md., July 9th, 1899. 
Bittacus stigmaterus Say. 
Plate LX, Fig. 20. 
Bittacus stigrnaterns. Say, Goodman’s West. Quart. Rep. 
2-164; Ent. Lee. Ed. 2-173; Hagen, Neurop. N. A. 247; 
Mine, Jour. Col. Hort. Soc. 13-114. 
Battacus pallidipennis, Westwood ; Westwood, Trans. Ent. 
Soc. Lon. 4-195 ; Walker, Cat. 468. 
Bittacus mexicanus, Klug ; Hine, Jour. CoL Hort. Soc. 
13-111. 
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