8 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



Color: One pale yellow; two light brownish yellow ; three, four and 

 five brown in apical half, bases hght brownish yellow ; six, seven and 

 eight brown, except base of six which is light brown. Spines con- 

 spicuous upon segments two to five. 



Prothorax broadened posteriorly, hind angles broadly rounded; 

 one pair of stout spines at each posterior angle, a spine of similar 

 length at each anterior angle, also one short anteriorly directed 

 spine near the long spine; between each posterior pair and median 

 line stands a row of five spines of which only number four is con- 

 spicuous; midway between anterior angle and median line stands a 

 spine nearly equal in size to the large spine at the anterior angle. 

 Mesothorax rounded at anterior angles which bear a shoulderlike 

 process; mesonatal plate with a small spine at each lateral angle 

 and with two pairs of inconspicuous spines upon posterior margin. 

 Metathorax broader behind than at juncture with mesothorax; 

 metanotal plate bears two pairs of spines on anterior margin of which 

 the median pair is much the larger. Sides of meso and metathorax 

 tinged with brown. Wings not reaching beyond seventh abdominal 

 segment; breadth at middle about one-eleventh the length; very 

 light brownish yellow; veins in fore wing extend from base to tip; 

 spines on veins at regular intervals, brown and conspicuous; costa 

 bears 15 to 19; fore vein 13 to 16; hind vein 9 to 10; scale 5; interior 

 of scale 1; fringe on costa of both wings slender and sparse; fringe 

 on hind margin of both wings heavy, light yellow and wavy. Legs 

 concolorous with body, moderately stout, clothed with numerous 

 short brown spines; a pair of stout spines at the extremity of each 

 tibia within; rows of spines on inner side of hind tibiae rather weak. 



Abdomen broadens gradually to the fifth segment and narrows 

 gradually from the seventh segment to the tip; the usual thickening 

 across the dorsum of segments two to eight reduced to a very thin 

 inconspicuous fine; three to four dark brown conspicuous spines 

 stand on each side of segments two to eight; a row of six small 

 spines stands near posterior edge of ventral segments two to seven; 

 posterior edge of dorsum of eighth segment bears a series of scalelike 

 projections 12 to 16 in number, each of which bears a tiny trans- 

 parent hair directed caudad. Posterior edge of ninth segment bears 

 a circlet of 10 spines, 8 of which are long, dark brown and conspicu- 

 ous, the ventral pair being smaller and lighter in color. The tenth 

 segment bears six long spines, the four dorsal being much stronger 

 than the two ventral ones and also darker brown. Tenth segment 

 conical. 



Described from 4 females; no males found. 



Locality, Clarksville, Tennessee, February 2, 1910. 



G. A. Runner, collector. 



Food plant, Aster sp.; specimens were collected from the roots of 

 this plant, undoubtedly in hibernation. 



